单项选择题

He must practise often ______.

A. so that he may speak fluently
B. unless he will speak fluently
C. if he could speak fluently
D. so that he would speak fluently
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单项选择题
They climbed to the top of the building ______ they could get a bird-eye view of the city.
A. though
B. in order that
C. for which
D. that
单项选择题
He went to the lecture early, ______ he got a good seat.
A. in order that
B. so that
C. in order
D. that
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