问题

I phoned you at about three this afternoon, but no one answered.— Oh, that was probably _______ I was doing exercise outdoors

A:when
B:why
C:what
D:that

正确答案是：

同类题型

The coat which my brother bought me is____wear.

I’m thinking about ________ my grandmother next Monday.

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Clare has offered a _______ of $ 100 to anyone who canfind her lost cell phone.

For lunch, I’d like ________.