The math problem is too difficult ,I can’t__________ . 

A. work out it    B. work it out    

C. work them out   D. put it out

Many old men prefer __________ in a peaceful countryside.

A. to live     B. living    C. live      D. lived

Mary likes learing English,______ she doesn’t like learning math at all.

A.and       B.or        C.but        D.so

------I’m taking the driving test next Sunday.

------________!

A.Good luck       B.With pleasure    

C.Good work       D.Congratulations

______ trees are cut down in the forests every year.

A.Thousand       B.Thousands   

C.Thousands of   D.Thousand of

The population of the world in 20 century became very much _____than that in 19 century.

A.bigger       B.lager   

C.greater      D.more

If I’m free,I’d like to spend ______holiday in Dunhuang.

A.three days    B.a three-day   C.three-day     D.three day

----_______ do you have out with your friends?

----Once a week.

A.How long      B.How often    C.How many    D.How soon

The accident took place ______ a cold February evening.

A.on     B.in    C. At    D.for

Don’t eat ________meat.If you do so, you’ll get ______ fat.

A.much too, too much   B.too much, much too

C.much too,many too     D.too many, much too