--What about the pen you bought yesterday.-- It well. I like it very much.A. was writtenB.

问题补充：

--What about the pen you bought yesterday.

-- It well. I like it very much.

A. was written

B. is written

C. wrote

D. writes

答案：

A. was written

B. is written

C. wrote

(答案→)D. writes

解析：考查情景交际和被动语态。“你昨天买的那支笔怎样？”“很好写，我很喜欢它。”表示事物本身的属性时，不用被动语态，而应该用主动形式。笔很好写，是笔本身的属性故用主动；排除A、B。对话情景发生在现在，故用现在时。类似的主动表示被动的词还有，sell well“好卖”；wash well“好洗”等。故选D。