A. friendly B. wonderfully C. pleasantly D. nicely
A. must not B. may not C. can't D. needn't
A. has left B. had left C. has been away D. had been away
A. had B. have C. to get D. to have
A. don’t; had B. didn’t; have C. didn’t; had D. don’t; have
A. can’t B. needn’t C. may not D. mustn’t
A. must be using B. must have used C. should be using D. should have used
A. joined B. have joined C. have been in D. have taken part in
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