---Have you thought of the topic for the composition?---Not yet Iit very carefully but I

问题补充：

---Have you thought of the topic for the composition?

---Not yet, Iit very carefully, but I haven’t decided.

A. will consider

B. have been considering

C. had considered

D. was considering

答案：

A. will consider

(答案→)B. have been considering

C. had considered

D. was considering

解析：考查动词时态。由关键词Not yet，I haven’t decided.推知一致在考虑，故用现在完成进行时意思“哟一致在考虑”。