2 . I opened the window          fresh air might come in.

A．so that

B．as if

C．as soon as

3 . David is a tennis player. He           to play tennis when he was six years old.

A．begins

B．began

C．will begin

4 . Michael and his friends practise          football after school every day.

A．play

B．to play

C．playing

5 . Could you please           the TV a little? I’m doing my homework.

A．turn up

B．turn down

C．turn off

6 . —Mum, can I go out to play basketball for a while?
—No, you          . The sun is much too bright now.

A．can’t

B．needn’t

C．shouldn’t

7 . —How do you like the book The Mind Map Book?
—I think it’s         . It teaches us how to use mind maps in our homework and life.

A．harmful

B．useful

C．different

8 . — What a nice model plane! —Thanks. I made it with 3D printer by         .

A．itself

B．myself

C．himself

9 . Under the double reduction policy (双减政策), students can have more time for their hobbies _______ Saturdays and Sundays.

A．in

B．at

C．on

10 .          hour is 60 minutes.

A．The

B．A

C．An