题目内容

Hardly had the plane landed _____the people ran toward it.

A. but
B. till
C. and
D. when

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You must speak louder _______ you can be heard by all.

A. because
B. so
C. so that
D. that

He is _____ a young boy that he can’t go to school.

A. so
B. such
C. very
D. pretty

____ he opened the window, a sparrow flew in.

A. Though
B. The moment
C. If
D. Unless

Bad habits, _____ formed, are difficult to give up.

A. and
B. once
C. but
D. or

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