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22
3. Mrs. Houston is reading her book (since 9 o’clock).
4. Sandra and Helen are talking (for 10 minutes).
5. Anna is listening to a new record (since 10 o’clock).
6. Tim and Alan are playing chess (for an hour).
19. Fill in the gaps with the verbs in brackets in the Present Perfect
Continuous.
1. He’s wet. He ……… in the water. (play)
2. He’s tired. He ……… hard. (work)
3. She’s cold. She ……… for three hours. (walk)
4. Everything is white. It ……… all night. (snow)
5. He’s confused. He ……… to solve the problem all morning. (try)
20. Look at the following and say how long the following people have been
working and how much they have done. It’s 11 o’clock.
Name Started / Activity Completed
Sandra 9 o’clock / type 20 letters
Kim 8 o’clock / clean house 4 rooms
Bob 7 o’clock / deliver parcels 30 parcels
John 10 o’clock / examine patients 3 patients
Helen 10 o’clock / draw pictures 4 pictures
E.g. 1. Sandra’s been typing since 9 o’clock / for 2 hours.
She has typed twenty letters so far.
21. Put the verbs in brackets into the Present Perfect or Present Perfect
Continuous.
1. Go out and get some fresh air! You ……… (sit) there reading all morning.
2. I can’t believe that you ……… (eat) three pizzas already!
3. I feel really tired I ………. (weed) the garden for the last three hours. I
……… (not rest) for a single moment.
4. Jim ……… (have) three car accidents so far.
5. It’s a along time since I saw your brother. What ……… he (do) lately?
6. I ……… (twist) my ankle. That’s why I’m limping.
7. I have a driving license. I ……… (drive) for four years now.
8. I’m a careful driver. At least I ……… never (have) an accident.
9. Jane needs an antiseptic because she ……… (cut) her finger.
10. Oh, do be quiet! You ……… (grumble) all day.
Unit III
Work and Energy
22 3. Mrs. Houston is reading her book (since 9 o’clock). 4. Sandra and Helen are talking (for 10 minutes). 5. Anna is listening to a new record (since 10 o’clock). 6. Tim and Alan are playing chess (for an hour). 19. Fill in the gaps with the verbs in brackets in the Present Perfect Continuous. 1. He’s wet. He ……… in the water. (play) 2. He’s tired. He ……… hard. (work) 3. She’s cold. She ……… for three hours. (walk) 4. Everything is white. It ……… all night. (snow) 5. He’s confused. He ……… to solve the problem all morning. (try) 20. Look at the following and say how long the following people have been working and how much they have done. It’s 11 o’clock. Name Started / Activity Completed Sandra 9 o’clock / type 20 letters Kim 8 o’clock / clean house 4 rooms Bob 7 o’clock / deliver parcels 30 parcels John 10 o’clock / examine patients 3 patients Helen 10 o’clock / draw pictures 4 pictures E.g. 1. Sandra’s been typing since 9 o’clock / for 2 hours. She has typed twenty letters so far. 21. Put the verbs in brackets into the Present Perfect or Present Perfect Continuous. 1. Go out and get some fresh air! You ……… (sit) there reading all morning. 2. I can’t believe that you ……… (eat) three pizzas already! 3. I feel really tired I ………. (weed) the garden for the last three hours. I ……… (not rest) for a single moment. 4. Jim ……… (have) three car accidents so far. 5. It’s a along time since I saw your brother. What ……… he (do) lately? 6. I ……… (twist) my ankle. That’s why I’m limping. 7. I have a driving license. I ……… (drive) for four years now. 8. I’m a careful driver. At least I ……… never (have) an accident. 9. Jane needs an antiseptic because she ……… (cut) her finger. 10. Oh, do be quiet! You ……… (grumble) all day. Unit III Work and Energy
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