5. There is an old bike under the tree.

4. I don’t play sports every morning.

3. Does Tim have a gold watch? 或Has Tim a gold watch?

2. What sport do you think is very interesting?

1．does　 2．don’t　 3．are　 4．be　 5．Can　 6．Is　 7．can’t　 8．doesn’t　 9．Do　 10．am

10．B(say表示说的具体内容，in English用英语

9．B(do为助动词，用于行为动词构成疑问句)

8．B(let’s后接动词原形)　　

7．A(join表示“加入”的意思)

6．A(your friend是单数名词作主语)