Didyouknow

問題詳情：

Did you know ______ ?

did they happen                               happened to them

they happened                                 they are happening

【回答】

B  考查賓語從句的使用，從句用陳述語序。happen是不及物動詞，what happens to sb.表示“某人發生了……事”，主句為過去時，從句也應用過去時。故選B。

知識點：賓語從句

題型：選擇題