.-- It’s no easy task to catch a ticket on a website that receives 1 billion clicks daily .
--I can’t agree with you more . There _____ be errors for every single step .
A. should B. must C. can D. will
We are in great need of a more capable monitor , ______ with straightforward personality as well as good humor .
A. who B the one C. one D. which
Parents and children should communicate more to _____ the gap between them so that they can understand each other better.
A. open B. narrow C. widen D.leave
We are now enjoying the cool air in the room . _____ ，the farmers are harvesting crops in the hot sun .
A. Therefore B. Besides
C. As a result D. In the meanwhile
We can see many examples in our life _____ positive thinking changes a person completely.
A. which B. that C. where D. while
______Ｉcould express my thanks to the traveler , he had already disappeared in the rain .
A. Before B. When C. Until D. While
