34. —Have you thought of a topic for your speech yet? —No Ia lot about it but I haven’t

问题补充：

34. —Have you thought of a topic for your speech yet?

—No, Ia lot about it, but I haven’t decided.

A. will think

B. have been thinking

C. had thought

D. was thinking

答案：

A. will think

(答案→)B. have been thinking

C. had thought

D. was thinking

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