—Whydidn’tyouchatwiththatfriendlyforeignerjustnow?—I’dl...

問題詳情：

— Why didn’t you chat with that friendly foreigner just now?

— I’d like to, but the trouble was _______ he said was difficult for me to understand.

A. what which        B. what that         C. that that            D. that what

【回答】

D

知識點：表語從句

題型：選擇題