—How much is _______ for a schoolbag?—Experts say students should carry_______ more than 10 or 15 percent of their body weight.
Mr. Chen is a teacher and works very hard. _________ his wife.
The car was stopped by highway man, while ______ through a forest.
______ a terrible storm would take place in Shanghai.
A fish needs water and without water it will die ______.
May I ______ you to write me a receipt?