【推荐1】We follow ________ that car has left in the grass.

A．mark

B．marking

C．the marks

D．to mark

【推荐2】They think seaweed food is food for_____________.

A．healthy

B．health

C．healthily

【推荐3】David promised to help me with my physics last Sunday. But to my great disappointment, he never appeared that day. What does the word “disappointment” mean in the sentence?

A．The feeling of being nervous

B．The feeling of being lonely

C．The feeling of being unhappy

【推荐1】—I read ________ story about Shennong？Do you know who he was，Tony?
—He was ________ emperor in ancient China.

A．a；/

B．a；an

C．an；a

D．an；/

【推荐2】Have you ever seen ________ UFO?

A．a	B．an
C．the	D．/

【推荐3】Mr. Wang is ________ SPCA officer. He likes his job very much.

A．a

B．an

C．the

D．/