國中英語基測出現過 I'm 的考題。

Dear Sir,

I’m sorry that I have to write this letter, but if I 1, you’ll never see what your problem is.

On Saturday evening, my family and I went to your restaurant for my birthday. Many people 2 in the restaurant. We were very hungry and didn’t want to wait, but your waiter said we 3 served in twenty minutes. We believed him, but we ended up waiting for ONE HOUR!

I have to say the steak was delicious, but it was still wrong to keep people waiting for so long.

Julia Wu

Serve 服務
1.
don’t
hadn’t
didn’t
haven’t
2.
have already been
will already be
were already
are already
3.
are going to be
have been
would be
were