— I’m terribly sorry that I have forgotten the reference book you lent me yesterday. — ________!
Do you know that I have trouble __________ the work?
Mr. White ______ from heart trouble, and he takes some medicine with him.
______ the bikes are too old to ride. I’ll have got to get them ______.
—______ Emily is in such a hurry? —I don’t know. She might run to catch the bus.
Half an hour has been made full ______ of _____ the problem.