A. It's
B. They
C. They're
D. are

1．我可以去大连旅行吗？ 
                             go on a                        Danlian
2．她正在房间里打点她的行装。
     She is                                      in the room.
3．这些短裤对我来说太小。
     These shorts are                                     me.
4．我们将在十月一日的下午离开。
      We will                                      lst             the afternoon.
5．他一回来我就告诉他这个消息。
      I will                         the news                                  he comes back.
6．见到这些老朋友，杰克很高兴。
      Jack is very                                     these old friends.
7．第二天，我们去了海滩。
     The                        , we             the beach.
8．我看见很多人再看报。
      I see                                     newspapers.
9．这些孩子在大声地笑。
      These children are                        .
10．有三只小狗在玩球。
        There             three dogs                         a ball.
11．今天上午，我们等了你三个多小时。
        We                       you for                       three hours this morning.
12．你旅途愉快吗？
                  You have a                      .
13．顺便说一下，我上周买了张新书桌。
                                         , I             a new desk last week.
14．停止说话，开始做作业。
       Stop            and                       your            .
15．昨天晚上史密斯夫人担心她的儿子。
       Yesterday evening Mrs. Smith                       her son very much..

1. These shorts are $ 60. (对画线部分提问) 
    _____________ these shorts?
2. This bag is 20 yuan. (改为复数)
    _____________ 20 yuan.
3. The girl in a blue sweater is Lucy. (对画线部分提问) 
   _____________ Lucy?
4. I play sports in the morning. (改为否定句)
   _____________ sports in the morning.
5. The boy's sweater is blue. (对画线部分提问)
   _____________  the boy's sweater
6. Can I help you? (改为同义句)
   _____________ for you?
7. English is my favorite subject. (用math 改为选择疑问句)
    ________ is your favorite subject,  English ________ math?
8. I want to take photos with you. (变为一般疑问句)
    ________ you want to ________ photos with me?
9. I like action movies because it's very exciting. (对画线部分提问)
    ________ ________ you like action movies?
10. don't, it's, I, great, think (连词成句) 
    _____________________________________________.