Young children seem to master computer games __________. And playing computer games will always make them feel ___________.

Trees need water to grow; _____, friendship needs our heart and passion to develop.

“Perhaps we need to send for Dr. Smith to see what we can do about it,” Father suggested ________ to his neighbor who had come to discuss the problem.

I ran across a car crash in Hong Kong, and ________, both sides just politely exchanged the telephone numbers and cards, a surprise to me.

In my opinion, she is too young to take care of the pet dog ______.