—Look, someone left a book.
—Oh, yeah … This book ________be Kitty’s. Only she likes to read this kind of books.
A. can B. must
C. may D. might
Look, so many people are running out of the station. I wonder what ________.
A. is happened B. was happening
C. is happening D. had happened
—Which of the two pairs of shoes will you take?
—I’ll take ________. They are too small for me.
A. both B. all
C. either D. neither
People who eat a balanced diet should be ________ than those who only eat hamburgers.
A. clever B. cleverer
C. healthy D. healthier
—Have you finished your homework yet?
—Yes. I _________ it twenty minutes ago.
A. have finished B. finished
C. will finish D. had finished
It is believed that ________ December 21st, 1891, the first basketball game in history was played.
A. on B. in
C. at D. by