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1. If we (not/ protect) _don't protect_________ the environment, our life will be badly affected.
2. When we arrived at the station, the last train ( already/ leave) __have already leaf________.
3. After he (do) __done________ all his homework, he went out for a walk.
4. Chess (play) _have played_________ for around two thousand years.
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1. was doing. 2. were waiting. 3. were playing - was preparing. 4. were talking. 5. was walking. 6. were watching. 7. were watching. 8. were having
1, I(do)__was doing____my homework when he phoned me last night.
2, They(wait)__were waiting___for me at 7o'clock last night.
3,My children(play)__were playing__with the toys while I(prepare)__was preparing___dinner.
4, We(talk)_were talking___on the phone at this time yesterday.
5, He(walk)__was walking___home when he saw the accident.
6, At 4 o'clock yesterday afternoon we(watch) ___were watching___ football in the schoolyard.
7, It stared to rain when we(watch)_were watching___TV.
8, When they(have)__were having___a drink, a waiter dropped a pile of plates.
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1.Sam....played....(play) his guitar at half past seven last night
2. ...did......you...drive.....(drive) to work when the accidient happened?
3.It.....rained....(rain) on Monday so we didn't play football
4.At 6 o'clock on Saturday morning we..are traveling......(travel) to the airport
5.I...did 't lisen.....(not listen) to my teacher when he asked a question
6.In 1986 my father....lived....(live) in Paris.That's where he met my mother
7.What...did....they...do....(do) when you arrived?
8.Greg....did ' t study.....(not study) for the test we went to his place
9. ....did.....Caroline.....skied..(ski) when she broke her leg?
10.My parents..did't sleeped.....(not sleep) when I came home last night
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1,plays
2,go
3,going
4,has lived
5,go
6,played
7,go
8,have learned
9,going
10,played
11,met
12,goes/didn't go
13,taught
14,did....go
15,are going to travel
16,doesn't like
17,drank
18,is studying
19,is coming
20,went
Đáp án: were doing (QKTD when QKĐ)