1 . Which is bigger, ________ sun or ________ earth?

A．a; a

B．a; the

C．the; a

D．the; the

2 . When I was in Sanya, I enjoyed ________ moon at night.

A．/

B．a

C．the

3 . We can’t see ________ sun at ________ night.

A．a; /

B．the; /

C．a; the

D．the; the

4 . —It’s ________ exciting day, isn’t it?
—Yes, it is. Well, ________ sun is going down. We have to go home.

A．a; a

B．a; the

C．an: the

D．an; a

5 . ________ earth is much bigger than ________ moon.

A．An; a

B．An; the

C．The; the

D．The; a

6 . ________ sun rises in ________ east and sets in ________ west.

A．The；/；/

B．/；the；the

C．/；/；/

D．The；the；the

7 . It’s ________ pleasure to see ________ sun rising in ________ east.

A．/; the; /

B．a; /; /

C．a; the; the

D．/; the; the

8 . ________ Earth is ________ beautiful place to live on.

A．The; a

B．The; the

C．A; a

D．A; the

9 . What can we do to protect ________ Earth?

A．a

B．an

C．the

D．/

10 . Mom, ________ moon is nice tonight. Let’s stay outside and enjoy it.

A．a

B．an

C．the

D．/