What the children in the mountain village need ______ good books.
A. is B. are
C. have D. has
In front of our school ______, where a lot of people play or take exercise at any time.
A. does a park lie B. is a park lie
C. a park lies D. lies a park
His study in Peking University lasted four years, ______ he founded his own company in Hong Kong.
A. after which B. after when
C. after that D. after it
I just don’t understand _______ that prevents so many Americans from being as happy as one might expect.
A. why it does B. what it does
C. what it is D. why it is
—What do you think of _____gifted chemist from London?
— Well, sometimes his behavior is beyond ______comprehension.
A. a; the B. the; /
C. the; the D. a; /
— Did you remember to give Jack the book?
—Yes, I gave it to him ______ I saw him.
A. while B. immediately
C. once D. suddenly
