Everyone makes mistakes in his life. The important thing is not to repeat________.
A.it B.them C.ones
I’ve got an “A” in the math exam. And I’m sure I’ll do better because this is a good________.
A.report B.result C.start
That man________be Mr. Smith. He has gone to New York on business.
A.can’t B.needn’t C.mustn’t
Mary________dinner in the kitchen when you called her at 6:30 yesterday evening.
A.prepared B.was preparing C.has prepared
— Shall we begin our trip at once?
— No. We won’t set off________our head teacher agrees.
A.if B.while C.unless
With rapid development of science and technology, it’s really hard to________the future life in 100 years.
A.understand B.imagine C.believe
