题目内容：

完形填空从A、B、C、D四个选项中选出可以填入空白处的最佳选项，并将答案写在答题卷上。

China celebrated the 70th birthday ______ Oct. 1st. Did you ______ the celebration at the Tian'anmen Square on TV? There was ______ opening speech(开幕致辞)by President  Xi Jingping. Many ______ took part in(参加)the celebration. Chen Zehao, 14, was one of them. Before the celebration, the students ______ hard over the summer. On that night, the ______ were so wonderful and they made the ______ 70 in the sky.

Many people did ______ for new China. On Sep 29th, President Xi presented medals(颁发奖章) to 42 people helped them ______ the medals. They are all my heroes. It's time for us to ______ from them.

1.A.in B.on C.at D.by

2.A.watch B.hear C.look D.listen

3.A.an B.a C.the D./

4.A.teachers B.doctors C.workers D.students

5.A.played B.did C.practiced D.sang

6.A.lion dance B.music C.big dinner D.fireworks

7.A.flower B.number C.picture D.game

8.A.a few B.a lot C.a little D.lots of

9.A.wear B.wears C.put on D.puts on

10.A.study B.teach C.learn D.help