——Don't forget to come to my birthday party, Mr. Wang. 

——（ ）.

——When shall we meet again next week?
——（ ）day is possible. It’s no problem with me.

——Can you come on Monday or Tuesday?
——I'm afraid（ ）day is possible.

After living for years in a big city, they found it difficult to settle（ ）in a town.

The ski resorts are usually crowded. There are many people（ ）skiing.

The reason for my absence was（ ）I had fallen ill.

I’v already decided I（ ）buy a new car.

Would you like（ ）to the United States?

We can have（ ）blue sky if we create（ ）less polluted world.

We don’t be able to go to the club（ ）our parents give us permission.

——Why not take（ ）umbrella with the sign “Made in China”? It is（ ）useful umbrella. 

——What（ ）good advice it is!

Not you but your father（ ）.

——How about taking a walk?
——Oh, I think it’s（ ）cold for a walk.

artificial的意思是（ ）

critic的意思是（ ）

eliminate的意思是（ ）

indicate的意思是（ ）

mechanism的意思是（ ）

occupation的意思是（ ）

gravity的意思是（ ）