(   ) 1. ―Did you get home early last night?

    ―No. When I arrived        home,it was 12 o'clock.

   A. to   B. at   C. in   D. /

5. I always spend one hour        my homework every day.

4. We are going to have a new teaching building       the future.

3. ―Which subject do you like better,history or geography? ―I prefer history        geography.

2. Mr. Chen is leaving        Hefei tomorrow. Let's go to the station and say goodbye to him.

1. Lucy likes singing very much. She wants to take part        a singing club.

5. It's a p        that Liu Xiang couldn't win the race in the 2012 London Olympics (伦敦奥运) .

4. The meeting is beginning. I have to 1        now.

3. It's b        for you to read in the sun.

2. Many basketball fans were very e        when Michael Jordan arrived in Beijing.