Yang Liwei showed the flags of China and the United Nations, ________ the wishes of Chinese people to use space peacefully.
Come and see me whenever __________.
The school has __________ a special class to help poor readers.
Eating too much fat can __________ heart disease and cause high blood pressure.
The gentleman the little children followed suddenly stopped and looked as if __________ whether he was going in the right direction.
The doctor __________ me to have my eyes tested, but I didn't take it for __________.