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 . We can’t see ________ sun at night.

A．/

B．a

C．the

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

A．The；/；/

B．/；the；the

C．/；/；/

D．The；the；the

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

A．/; the; /

B．a; /; /

C．a; the; the

D．/; the; the

6 . —Earth is ________ only home to everyone.
—Let’s try to make it ________ greener world to live in.

A．a; a

B．a; the

C．the; a

7 . It was ________ cold winter night and the moon was shining brightly across ________ night sky.

A．a; the

B．a; a

C．the; a

D．a; /

8 . —Do you know anything about ________ Earth?     
—Yes. It provides water and food ________ us.

A．a; for

B．an; with

C．the; for

D．/; with

9 . _______ moon goes around ________ earth.

A．The; an

B．A; the

C．An; a

D．The; the

10 . —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