[ Past and Present Tenses ]
They _______ movies all night. (watch)
A. were watching
B. have watched
C. had watched
D. have been watching

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Tenses › ViewIf you (not smoke), you wouldn’t have died of lung cancer.
A. don’t smoke
B. hadn’t smoked
C. didn’t smoke
D. haven’t smoked
Basic Tenses › View
_________ you go to the zoo?
A. How often
B. How often do
C. How often does
D. How are
Grammar › ViewYesterday I had to explain English grammar ______ the class.
A. to
B. about
C. on
D. under
Vocabulary › View
He hadn’t been his usual _______ self for the last three weeks.
A. jocular
B. bacchic
C. plaint
D. elegy