1 . —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

2 . —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

4 . 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

5 . ________ Atlantic Ocean is ________ ocean in the world.

A．/, second big

B．the, second biggest

C．the, the second biggest

D．/, the second biggest

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

A．a

B．an

C．the

D．/

7 . ______ Yangtze River is ______ longest river in China.

A．The; the

B．/; the

C．/; a

D．The; a

8 . We took ________ tour by coach to ________ Summer Palace.

A．a; the

B．a; /

C．an; the

D．an; /

9 . Scientists have found many galaxies in ________ universe.

A．a

B．an

C．the

D．/

10 . 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