Mrs. White isn’t here. She ______ London. A. has been to B. has gone to C. went to
Don’t bother your father. He’s got a lot _________ his mind.
The parents can _________ afford his extra education abroad, because one of them has been out of work.
Since the war _________ in Syria in 2011, there have been a great many refugees(难民) running to nearby European countries.
We Chinese are _________ to protect the fishermen to fish in the proper area.
— I wonder _________ or not the animal signs are kept in a fixed order.— Oh, they should be.