Doyouknowwhat

問題詳情：

 Do you know what __________this time yesterday?

A. they are doing   B. were they doing  C. they were doing　D. are they doing

【回答】

*：C　要填的內容為know的賓語，為賓語從句。從句應用陳述句的語序。

知識點：賓語從句

題型：選擇題