[ Grammar ]
Fill in the blank with the correct principal part of the verb. The boys have __________ their homework.
A. done
B. did
C. does
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Perfect Tenses of Verbs › ViewSome of the climbers had left for the summit too late.
A. present perfect
B. past perfect
C. future perfect
Modal Auxiliary › View
You need your sleep.
You _________ stay up late.
Which modal auxiliary is the right choice for giving suggestion?
A. mustn’t
B. shouldn’t
C. don’t have to
Grammar › ViewThe new tablet is the least / less expensive of all the devices.
A. least
B. less
Grammar › View
The living room……next to the garage.
A. am
B. is
C. are
D. do