Question

小橘

請問D選項為什麼可以用having ?

When I was a child, I used to pack up my backpack when
(A) had
(B) have
(C) I have had
breakfast, so I often left things out.
D) having

Answer 1

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青奈子ainako

主詞相同時,when後面省略主詞,要用Ving

小橘

好的，感謝