1、Asia ______ by most experts to be the cradle of human civilization.

　　A. has always been considered　　B. has been always considered

　　C. always has been considered　　D. has been considered always

　　2、 ______ they have learned about how to communicate effectively with someone from another culture?

　　A. What it is that　　B. What it that is

　　C. What is it that　　D. Is it that what

　　3、The boys' father built them a large sand box ______.

　　A. to play in　　B. to play in it

　　C. to play in there　　D. in which to play in there

　　4、Respect for the law is the foundation of civilized living. ______ breaks it will be punished.

　　A. Who　　B. Whoever　　C. No matter who　　D. People who

　　5、Firstborn children in a family seem to have a stronger desire to succeed ______.

　　A. than do later-born children　　B. but later-born children do

　　C. as children born later　　D. if later-born children do