_____ you may have, you should gather your courage to face the challenge.
A.However a serious problem B.What a serious problem
C.However serious a problem D.What serious a problem
My sister met him at the cinema yesterday afternoon, so he _________ your lecture.
A.couldn't have attended B.needn't have attended
C.mustn't have attended D.shouldn't have attended
________ who are able to work through the struggle are the ________ who are going to be successful.
A. Someone; one B. Anyone; one
C. He; ones D. Those; ones
A dog’s eating habit requires regular training before it is ________ established.
A.properly B.widely
C.originally D.temporarily
— How does Jane put on so much weight?
— Large quantities of fat ____ recently.
A.are consumed B.is being consumed C.has been consumed D.have been consumed
There’s no doubt ______ hard work is the key to _____ your result.
A.whether; improving B.that; improving
C.whether; improve D.that; improve
