The little boy came riding full speed down the motorway on his bicycle. ______ it was!
A. What a dangerous scene B. What dangerous a scene
C. How a dangerous scene D. How dangerous the scene
--- How was the televised debate last night?
--- Super! Rarely ______ so much media attention.
A. a debate attracted B. did a debate attract
C. a debate did attract D. attracted a debate
With the help of high technology, more and more new substances ______ in the past years.
A. discovered B. have discovered
C. had been discovered D. have been discovered
--- Guess what! I have got A for my term paper.
--- Great! You ______ read widely and put a lot of work into it.
A. must B. should C. must have D. should have
--- Did you tidy your room?
--- No, I was going to tidy my room but I ______ visitors.
A. had B. have C. have had D. will have
Alan is a careful driver, but he drives ______ of my friends.
A. more carefully B. the most carefully C. less carefully D. the least carefully
