第二部分：英语知识运用（共两节，满分45分）
第一节：单项填空（共15小题；每小题1分，满分15分）
从每题所给的A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
21. I wonder we haven’t received her invitations yet. Her wedding is only two days away.
A. how B. why C. that D. When
He studied the project carefully, determined ______ it ahead of time.
| A．finish | B．finishing | C．to finish | D．to have finished |
—Hi, Lucy, I’m wondering whether I can use your mobilephone for a while.
—I hate to say, but ______.
| A．it’s being repaired | B．it has been repaired | C．it’s repaired | D．it had been repaired |
The bus crashed into a truck in front of it, ______ 40 deaths and more wounded.
| A．cause | B．causing | C．caused | D．to cause |
I bought a dress for only 10 dollars in a sale; it was a real ______.
| A．exchange | B．business | C．bargain | D．trade |
Will you have a free evening tonight? ______, let’s have a dinner together.
| A．If not | B．Why not | C．If so | D．What’ more |