问题

Never before ________ buying a computer, but now it seems a necessity in my everyday life.

A:did I think of
B:have I thought of
C:I thought of
D:I have thought of

正确答案是：

标签： before , never , thought

同类题型

I like this room. You ______ see the mountains from the window.

These aren’t my keys. Mine ___________ in the drawer.

________ is this? — It is black

Why don’t you answer my question, Bill? —difficult for me to answer. [ ]

I hope you are ______ good health. [ ]