Only thirty per cent of parents say that they know what their children like to do after

问题补充：

Only thirty per cent of parents say that they know what their children like to do after school.

A. /, the

B. a ,the

C. the, /

D. a, a

答案：

A. /, the

B. a ,the

(答案→)C. the, /

D. a, a

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