—Is this Toby’s iPhone5,Jenny ? —No,it________be his. His is black A. muctn’t B. can’t C. may not.
I had some trouble____ complete sentences in learning English.
If you don’t know how to read new words, ____ them____ in a dictionary.
The best way ___ your English is to join an English club.
—I haven’t seen Jack for three days, is he ill?—_______. His mother told me that he was in hospital.
—Do you have enough men to carry these chairs? —No. I think we need _______ men.