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
Her behavior is __________.
A. worthy praise B. worthy to be praised
C. worth to be praised D. worth being praised
—The room is so dirty, _____ we clean it?
—Of course.
A. will B. shall C. would D. do
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
_____ 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
Over the past 40 years, 29 other Chinese people ____ Mount Qomolangma successfully.
A. climbed B. have climbed C. had climbed D. climb
