I suppose they have known about it, _______?
A. am I
B. am not I
C. have they
D. havent they
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既是青藏地区的主要农业区,附近又有丰富的水能和地热资源分布的是()
A. 湟水谷地
B. 雅鲁藏布江谷地
C. 横断山区
D. 宁夏平原
The lady treats the boy well as if he ______ her own son.
A. is
B. was
C. were
D. would be
A.sawB.watchedC.noticedD.examined
A. saw
B. watched
C. noticed
D. examined
The mother told the little boy to do all the things _______.
A. on himself
B. on his own
C. to himself
D. by own