I say Clancy is a smart boy he still needs to work hard to achieve his goal.A. ThenB. Wh

问题补充：

I say Clancy is a smart boy, he still needs to work hard to achieve his goal.

A. Then

B. When

C. While

D. As

答案：

A. Then

B. When

(答案→)C. While

D. As

解析：句意：虽然我说Clancy是一个聪明的孩子，但他仍需努力工作来实现他的目标。A.然后、那时； B.当……时； C. 虽然、当……时； D. as引导让步状语从句时，需要倒装，所以排除。 故选C。

考点: 考查连词的用法。