Chia đông từ trong ngoặc :
1 . It started to rain while I ( walk ) to school .
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2 . She ( not / finish ) her homework yet .
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3 . Nga and Lan ( do ) the home work at 8 o'clock last night .
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4 . Oh dear ! They always ( ago ) to class late .
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5 . When Mr Tuan ( arrive ) home , his children ( watch ) a film on TV .
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6 . What you ( do ) at this time last Sunday ? - We ( collect ) waste paper for recycling .
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7 . He ( be ) in Viet Nam for two weeks .
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8 . Yesterday Ba ( ask ) me to go to the station with him . but I ( not/want ) to leave the house because I (wait ) for a call .
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9 . I ( already / see ) that film .
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10 . Mrs . Quyen ( do ) shopping while Mr Thanh ( attend ) a business meeting .
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1. was working .
2. hasn't finished .
3.did
4.go
5. had arriving , had watching .
6. did , collected .
7. have been .
8. asked , don't want , waited .
9.already have seen .
10 . did , was attending .
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