Question

改错。下面句中有一处错误，把错误的一项选出来并加以改正。

The light in the room is	on,	he	has forgotten	to	turn it off	when he	went out.
	A		B		C		D

Answer 1

答案：B
解析：

has forgotten→forgot

提示：

因为现在完成时不能与表示过去的时间状语连用。