1 . I want to be ________ astronaut, because I can fly rockets to ________ moon.

A．a; the

B．an; the

C．a; a

D．an; a

2 . The Shenzhou-14 manned spaceship returned to ________ earth safely from space in December.

A．a

B．an

C．the

D．/

3 . Everyone should play ________ part in saving ________ earth.

A．a; an

B．a; the

C．the; /

D．the; an

4 . More and more people realize saving ________ earth begins with small things.

A．a

B．an

C．the

D．/

5 . —Everyone in the world should play ________ role in saving ________ earth.   
—I agree with you. It is our home.

A．a; the

B．a; an

C．the; a

6 . —Do you want to be __________ astronaut when you grow up?
—Of course. I also hope to take a spaceship to__________ moon in the future.

A．a; a

B．an; the

C．a; the

D．an; a

7 . — Do you often use ________ Internet for shopping?
— Yes, I bought ________ umbrella online just now.

A．/; an

B．/; a

C．the; an

D．the; a

9 . It was ________ fine day. ________ sun was shining and ________ wind was gentle.

A．a, The, /

B．a, The, a

C．a, The, the

D．the, The, the

10 . According to Daily Mail, China has set up a goal of sending astronaut to ________ moon by 2030.

A．a

B．an

C．the

D．/