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

A．a; /

B．the; /

C．a; the

D．the; the

2 . —Look at ________ kite. It’s flying high in ________ sky.
—That isn’t ________ kite, Jim. It’s a plane.

A．the; the; the

B．the; the; a

C．a; the; the

D．the; the; a

3 . If we want to go on living on ________ earth, we should care about ________ environment.

A．/; /

B．the; /

C．the; the

D．an; an

4 . _____ sun is shining.

A．The

B．A

C．An

5 . —Do you use ________ Internet to study?
—Yes, I use it once ________ week.

A．the; the

B．the; /

C．the; a

D．a; a

6 . _________ Earth is bigger than _________ Moon.

A．A, a

B．An, a

C．The, the

D．/, /

7 . — Do you know anything about _______ Earth?
— Yes. It provides water and foods _______ us.

A．a; for

B．an; with

C．the; for

D．/; with

8 . Many more people have realized saving_____________ earth begins with small things.

A．a

B．an

C．the

9 . Rivers low, mountains high, the same moon in _________sky.

A．a

B．/

C．the

10 . Look! There are so many stars in ________sky.

A．a

B．an

C．the

D．/