It would be months _________ he was fit for work.
A. although
B. unless
C. before
D. until
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The newspapers are full of ______ news nowadays.
A. depressing
B. expressing
C. depressed
D. expressed
He could not guess how they managed ______.
A.doing this
B.to doing this
C.to do this
D.to doing this
下列()为少年期河谷地貌特征。()
A. 河曲
B. 隘谷
C. 峡谷
D. 牛轭湖
下列()为海成地貌。()
A. 河口三角洲
B. 砂坝和砂堤
C. 泄湖和海滨沼泽
D. 砂嘴