单项选择题

______ entering the house, he immediately found something strange.

[A] At
B. In
C. On
D. For
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单项选择题
Which is one of the advantages of such glue
A. It can work on wet surfaces.
B. It can be used forever.
C. It can be make into a kind of sugar.
单项选择题
You have made a few spelling mistakes in your composition, but______, it is fairly good.
[A] as a whole
B. generally speaking
C. after all
D. on the whole
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