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