---Why did you laugh just now?

---Ted wanted to tell us _____ very funny story， but he forgot ______ ending himself.

A. a ， an B. the ， the

C. The ， a D. a ， the

---Look， here comes Cindy! She is always full of _____________.

---____________. Because she takes a lot of exercises every day.

A.knowledge， So is she B. courage， So does she

C. change， So she is D. energy， So she is

--- Is your teacher friendly ______you? --- Yes， he is very good ______us.

A. to， to B. with ， with C. to， with

.A smile costs _________， but gives so much. So we should learn to smile.

A. something B. anything

. nothing D. Everything

The houses in big cities are so expensive that I can’t __________ to buy one .

A. afford B. choose C. decide D. Give

______ it is raining hard ， they are still working in the field.

A. Because B. As soon as

C. Though D. Unless

---He is an honest person ， so what he said is _______.

A， knowledgeable B， valuable

C， comfortable D， believable

Smoking ______ in public places in many countries. So you ______ smoke here.

A.doesn’t allow ， can’t B. isn’t allowed， mustn’t

C.wasn’t allowed， may not D. didn’t allow， can’t

It’s difficult for us to __________ each other because we have spent so much time together .

A. separate from B. separate to

C. play with D. lay for

You have grown up and you should _______ what you have done .

A. be responsible for B. be responsible to

C. responsible for D. responsible to