A. has done B. had done C. would do D. will do
单项选择题Please make my excuse at tomorrow's meeting. I've got too much work()
A.to do to come B.doing coming C.to do coming D.doing to come
单项选择题In our class, when the bell rang and the teacher closed his book, it was a()for everyone to stand up.
A.signal B.chance C.mark D.measure
单项选择题—()do you visit your grandparents before —Every winter.
A.How long B.How often C.How soon D.How much
单项选择题In the Mediterranean seaweed is so abundant and so easily harvested that it is never()of great.
A.fare B.payment C.worth D.expense
单项选择题The new librarian still doesn't know()the out of date newspapers and magazines.
A.what to deal with B.how to deal with C.how to do with D.what to do away with