Wearethankfultothosewhosupporteduswhenwewere

問題詳情:

 Wearethankfultothosewhosupporteduswhenwewere

 We are thankful to those who supported us when we were __________ trouble.

A. in                B. by               C. about                  D. for

【回答】

A

知識點:介詞和介詞短語

題型:選擇題