1. Trung ………………………. Play baskeyball yesterday.
A: wasn’t. B: doesn’t. C:didn’t.
D:isn’t
2. My sister didn’t like sports when she. ……………small
A: Did. B:be C:is. D:was
3. Clara ……………….. Computer games 2 hours ago.
A: plays B:played. C:plaied. D:playied
(-) S+ didn’t+ V+ O
(?) Did+ S+ V+ O?
(?) Was/ Were+ S…?
– Thì quá khứ đơn (có “yesterday”) thể phủ định