The flu is believed____ by viruses that like to reproduce in the cells inside the human nose and throat.
3. Some parents are just too protective. They want to ______ their kids from every kind of danger, real or imagined.
2. During the war there was a serious lack of food. It was not unusual that even the wealthy families had to ______ bread for days.
1. Would you please __the paper for me and see if there are any obvious mistakes?
________ many times , he finally understood it.
The teacher together with the students ________ discussing Reading Skills that ________ newly published in America .