There will be interval of 20 minutes after second act.A. an;aB. an;theC. 不填；theD. the;a

问题补充：

There will be interval of 20 minutes after second act.

A. an;a

B. an;the

C. 不填；the

D. the;a

答案：

A. an;a

(答案→)B. an;the

C. 不填；the

D. the;a

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