They were quite ________ the fact that they had made a big mistake.
A. unaware
B. unconscious of
C. conscious for
D. unknown of
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When there are several topics ________, he will have a hard time making the decision.
A. for him to choose
B. for him to choose from
C. he had to choose them
D. that he choose
She shut the window ________ she might keep the insects out.
A. because
B. in order that
C. till
D. as
He hurried to the mayor’s office, ________ why he needed to talk to him at such a late hour.
A. wondering
B. wondered
C. wonders
D. wonder
It was after he had a thorough investigation ________ came to know the actual state.
A. where he
B. that he
C. when he
D. and he