问题

There are more than 740 million Chinese ______ to second-hand smoking in public places now.

A:are being exposed
B:to expose
C:having been exposed
D:exposed;

正确答案是：

同类题型

Will you please ______ me a cup of tea

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____wonderful our school is! There are many good teachers and students in it.

You know I dropped medicine and physics.—You made a right decision.

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