_____ makes a new invention such a wonderful thing is ____ it allows us to do something ____ we could not do before.

A. What; what; what     B. That; that; \        C. What; that; \      D. That; what; that

There are many kinds of birds in Australia, and over 140 species of snakes, ______are extremely dangerous.

A. many of those        B. many of that       C. many of which    D. many of what

—The room is so dirty, _____ we clean it?

—Of course.

A. will                B. shall              C. would           D. do

Her behavior is __________.

A. worthy praise            B. worthy to be praised  

C. worth to be praised      D. worth being praised

During our stay in London, the guide book ___ a great help. We all had a wonderful time.

A. behaved             B conducted          C. served         D. proved

More than one company ___ the new design to market only to see it quickly denied by those who couldn’t wear them.

A. has taken            B. has been taken       C. have taken     D. have been taken

Try ____ she might, Sue couldn’t get the door open.

A. if                   B. when                 C. since          D. as

_____ we can see, we can’t get very far in this project without her help.

A. As long as            B. So long as             C. So far          D. As far as

I admired my classmate Lisa very much.___ her prettiness, she was smart and helpful.

A. Except               B. But for                C. Apart from      D. In spite of

The chairman thought _____ necessary to invite Professor Smith to speak at the meeting.

A. that                    B. it                     C. this            D. him