He’s given me so much help that I really wanted to do something for him _______ .
A.in turn B.in advance C.in return D.in case
The boy pretended _____ a magazine when the teacher came in.
A.to read B.to have read C.to be reading D.reading
It is not always easy for the public to see ________ use a new invention can be of to human life.
A.whose B.what C.which D.that
How amazing it is that Zuckberg can speak Chinese! After all, it is a big _____ for any westerner to learn such a totally different language.
A.favor B.guarantee C.relief D.challenge
As time went by, I gradually ________myself to the college school life.
A.adapted B.adopted C.affected D.abandoned
“Put on your coat, ______ you will catch a cold!” This is what my mum often says .
A.and B.but C.or D.so
