[ Grammar ]
_____________ was the telephone invented ? In 1876.
A. where
B. what
C. when
D. who
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Verb Tenses › View. What helping verb is used in past perfect tense?
A. Have
B. Had
C. Will
D. Has
Grammar › View
My friends ______________to that restaurant before, so they knew exactly what to order.
A. were going
B. were
C. had been phoning
D. had been
Grammar › ViewIf they decide to go out, they ____ you.
A. call
B. ‘ll call
Modals Auxiliary › View
Before the presentation, someone ………. all the things he needs.
A. had to check
B. had better check
C. should be checked
D. could check
E. should have checked