---Do you know the _________of the trip ? ---Yes, it’s free_________30 or more students.

A.cost ; for B.cost ; of C.pay ; of D.take ; for

---Who is that girl sitting there____?

---Well, if you must know,her name is Jenny.

A.friendly B.lonely C.lovely D.quietly

—Will it be sunny this afternoon?

—It _______ fine. Who knows? The weather (天气) always changes quickly.

A.must be B.will be C.may be D.maybe

They will protect their families if there is ____________.

A.dangerous B.in danger

C.danger D.in dangerous

It's reported that the Chinese White Dolphins have_____________ living areas. Instead, the number of fishing boats in Yangtze River is getting______________.

A.less and less; more B.fewer and fewer; larger

C.fewer and fewer; more D.more and more; larger

---We are going to have a party this Saturday. Would you like to come?

--- ___________________! I have another one that day. Thank you all the same.

A.What a pity B.What a surprise C.What fun it is D.What a great time

This is the telephone number. Do you want to _______________?

A.write down it B.write it down C.write down them D.write them down

---______a year do the member of the Birdwatching Society study the birds? ---Once a year.

A.How often B.How many times C.How long D.When

His aunt will come to visit his family by car, but he doesn’t know _____________.

A.how to come B.when to come C.how she will get here D.when she will get here

Tom isn't feeling very well. He seems to have a cold _______ the weather changes suddenly.

A.before B.so C.because D.because of