Question

【题目】Tom wants to try climbing the mountain again even though he _______twice already.

A. failedB. has failedC. failsD. had failed

Answer 1

【答案】B

【解析】

句意：Tom想要再次尝试爬山，尽管他已经失败了两次了。failed失败，过去式；has failed现在完成时；fails三单形式；had failed过去完成时。根据句意和句中的twice 和already可知，这里应用现在完成时，故应选B。