单项选择题

Walking along the river, he heard someone _____ for help.（）

A. shouting
B. shout
C. shouted
D. having shouted

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单项选择题
The reason _____ he failed the exam was _____ he had not worked hard.（）

A. why……if
B. why……that
C. that……why
D. why……what
单项选择题
_____ to get there on time， we walked as fast as we could.（）

A. hoping
B. to hope
C. hoped
D. being hoped
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