The engineer spoke highly of the government’s efforts, ____ he owed his safe return from Libya.
A．through which B．to which C．with whom D．for whom
—Why did you leave without a word of warning to John?
—But what _____ otherwise? He never listens to me.
A．could I have done B．would I do
C．must I have done D．should I do
Mary often stays up, reviewing her lessons, books___ all over the desk.
A．spreading B．spread C．are spreading D．to spread
—Look, the paint is starting to come off ____ the wall is damp.
—Well, we'd better have the wall repainted some day.
A．when B．where C．if D．once
If you ___ stick to the unrealistic approach, the worse result will be waiting for you not far ahead.
A．will B．may C．must D．can
The petrol in the car ____ on our way to the beach, so we had to walk there.
A．gave up B．gave off C．gave in D．gave out
