Question

未來

請問這一題謝謝

(A) where
(B) when
7. Be sure to turn off the lights when
(A) leave No
I
You
(C) that
your uncle and I used to work togeth
(D) which
the classroom.
leaving
He leave
(D) have left
and could only get the seat in the back
of the

Answer 1

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烏冬

沒有主詞代表這裡的when當作介系詞來用，所以後面接動名詞Ving