My uncle ________ the army when he was eighteen.

[　　]

Why did you ________ much time reading novels?

［　　］

The tigers are ________. We should _________ them.

[    ]

A. dangerous; save   B. in danger; save

C. in danger; kill   D. dangerous; defend

Would you prefer that I _________ Monday instead of on Tuesday?

[    ]

A. come on   B. come at   C. come in   D. come up

The project lasted 5 years and ________ I billion yuan.

[    ]

A. spent   B. paid   C. cost   D. worth

The earth is mainly ________ seven continents and four occans.

[　　]

I can hardly hear the radio. Would you please ________?

[　　]

I know you're good at singing. Have you ______ a record of your own?

[　　]

After that more and more countries ______ the games.

[　　]

A．joined

B．joined in

C．take part in

D．attend

The letters "UK" __________ "The united kingdom of Great Britain and Northern Ireland."

[    ]　　

A. stands up　　B. stands for 　　

C. stood up  D. stand for