问题
选择题
I can’t find my English book. I must ___ it at home this morning.
A．forget
B．leave
C．have forgotten
D．have left
答案
答案：D
must后加完成时表示叙述过去的事情, 把….留在家里不能用forget,只能用 leave
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I can’t find my English book. I must ___ it at home this morning.
A．forget
B．leave
C．have forgotten
D．have left
答案：D
must后加完成时表示叙述过去的事情, 把….留在家里不能用forget,只能用 leave