Itis not until you have lost your health ______ yo

u know its value.

A. until B.when C. what D. that

3. He talks as if he _______everything in the world.

A．knows B．knew

C．had known D. would have known

4. Never before _______ seesuch a terrible car accident on the road!

A. I have B.have I C. I did D. did I

5. The girl sometimes hasdif6culty _________ what the teacher says in class.

A．understand B．understanding

C．to understand D．understood

6. The paint is still wet._________.

A．Be not sure to touch it! B．Be sure not to touch it!

C．Be sure to not touch it! D．Don't be sure to touch it1

7. The students ______ theirpapers by the end of this month.

A．have finished B．will be finishing

C．will have finished D．have been finishing

8. —Did the medicine make you feel better？

—No. The more ________, ________ I feel.

A. medicine I take; and the worse B. medicine I take; the worse

C. I take medicine; the worse D. I take medicine; worse

9. There was so much noise inthe classroom that the teacher couldn't make himself ______.

A. heard B.hearing C. to hear D. hear

10. This overcoat cost_________. What's more, they are _______ small for me.

A. very much; very B.too much; much too

C. much too; too much D. very much; too much