Answer keys Unit 15. Computers
I. 1.C
2. D
3. A
4. C
5. B
II.
1. requirement
2. properly
3. agreement
4. helped
5. time-consuming
III.
l.B
2. A
3. D
4. B
5. C
6. D
7. A
8. C
9. B
10. D
IV.
1. wrote, haven’t received
2. Do you know, is talking
3. discussed
4. went
5. are playing
6. was practicing
7. has taught
8. has just won
V.
1.are you watching, am not enjoying it.
2. was looking, turned
3. rained
4. operating
5. getting up
6. haven’t yet explained
7. was shown, was being watched.
VI.
1.back
2. that
3. to
4. is
5. was
VII.
1.D
2. E
3. B
4. C
5. A
VIII.
1. Our old house is not as big and comfortable as the new one.
2. I don’t like coffee and neither does my sister.
3. An ambulance has just been sent to the school
4. They told me that there were flights from Nha Trang to Ha Noi twice a week.
5. I’d rather you didn ’t interrupt me while I am speaking.
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