1 . Scientists have found many galaxies in ________ universe.

A．a

B．an

C．the

D．/

2 . I like playing ________ basketball with my friends when ________ full moon is high in the sky.

A．/; the

B．the; a

C．the; /

D．a; the

3 . ________ moon is smaller than ________ earth.

A．A; a

B．The; a

C．The; the

D．A; the

4 . _______ moon goes around ________ earth.

A．The; an

B．A; the

C．An; a

D．The; the

5 . London is in the south of England and it is on ________ River Thames.

A．a

B．the

C．an

D．/

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

A．/; /

B．the; /

C．the; the

D．an; an

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

A．the; the

B．the; /

C．the; a

D．a; a

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

A．a

B．an

C．the

D．/

9 . ―Tomorrow is Sunday. How do you spend it?
―I want to go on________ trip to ________Great Wall.

A．a; the

B．/; the

C．the; a

D．the; /

10 . I am going to be _____astronaut when I grow up. And I will fly rockets to ______ moon.

A．an;a

B．a;/

C．an; the