－Hi, Mary．________?

－Not so well．I can’t keep up with the other students．

A．How long have you studied chemistry

B．Who is teaching you chemistry

C．How is your chemistry study going

D．Where are you learning chemistry

At the science museum, the boys and girls get to know ________．

A．what is the spaceship like

B．what the spaceship looks like

C．how the spaceship looks like

D．how does the spaceship look like．

I really don’t know ________．

A．which topic to choose

B．what to choose topic

C．which to choose topic

D．what topic choosing

I don’t understand ________ believe him．

A．why don’t you

B．why you not

C．why you don’t

D．why not you

The little boy didn’t know ________．

A．Which hat is his

B．which hat his is

C．which hat was his

D．which hat his was

I don’t know ________ a show．Can you tell me?

A．how organize

B．what organize

C．what to organize

D．how to organize

His father could hardly walk any more, ________?

A．Does he

B．Doesn’t he

C．could he

D．couldn’t he

________ advice it sounds!

A．How useful

B．What useful

C．What a useful

D．How usefully

He wanted to know ________．

A．how does he go to school every day

B．how he goes to school every day

C．how did he go to school every day

D．how he went to school every day

If you don’t know the answer to something, you say：“________”

A．Sorry, I don’t understand．

B．I’m sorry．I don’t know．

C．Can you speak English?

D．Excuse me．How do you say that in English?