you should have thanked her before you left.I meant _______,but when I was leaving I couldn't find her anywhere]a to do b to cdoing d doing it为什么不选A?
问题描述:
you should have thanked her before you left.
I meant _______,but when I was leaving I couldn't find her anywhere]
a to do
b to
cdoing
d doing it
为什么不选A?
答
B
回答省略了文句中的动词 thank
如果用A应该回答成完整的句子 to do it
答
选B
to后面要省略啊
答
如果选A,要在to do 后加it,do 是及物动词.