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See the flags on top of the building?That was we did this morning. [ ] A. when B

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See the flags on top of the building?That was we did this morning. [ ] A. when B

See the flags on top of the building?That was ________ we did this morning.

[]A.

when

B.

which

C.

where

D.

what

试题答案

答案:D

提示:

what we did this morning是表语从句,what在从句中作did的宾语。