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-You should have thanked her before you left. -I meant , but when I was leaving

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-You should have thanked her before you left. -I meant , but when I was leaving

-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

C.

doing

D.

doing it

试题答案

答案:B