[ Grammar ]
When my friend ________, I ________ an exercise.
A. was coming/ had been doing
B. came/ was doing
C. was coming/ has been doing
D. came/ had been doing
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Modal Verbs › ViewYou … smoke in any public building. It is prohibited by law.
A. don’t have to
B. mustn’t
C. both are correct
Grammar › View
Cousteau founded the nonprofit Cousteau Society _________________ encourage the protection of the sea.
A. because of
B. because of the fact that
C. in order to
D. thus