A child who lives in an uninteresting environment will develop less intelligence than ______ who lives in a rich and changing environment.

I have made _______ clear _______ I have nothing to do with the accident.

--Why did you give up the job in Australia?----Because I don’t want to stay far away from my family. You know, my family means ______ to me.

 That region has a lot of natural resources while this one has ________.

—Can I help you, boy?—Yes. There is ______ wrong with my bike.