[ Grammar ]
They have been____ the work
A. Doing
B. Done
C. Do
D. Did
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Grammar › ViewYou _____ do better next time if you work harder.
A. can
B. must
C. may
D. shall
Tenses › View
The earth __________ a crust under the oceans and the land that we live on.
A. is
B. has
C. have
D. are
Grammar › ViewThe doctor suggested that you _____ this procedure.
A. to try
B. try
C. trying
D. to be trying
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What ____ at 9 o’clock last night? I phoned you but couldn’t get through to you.
A. did you do
B. were you doing
C. would you do
D. had you done