I am not appealing for myself. I am appealing ________ all the ordinary teachers.
It is not always easy for the public to see _______ use a new invention can be of to human life.
_______ that we can't get the necessary equipment, we will have to give up the experiment.
Attackers in China’s Xinjiang region crashed two cars into shoppers at a market in May,31 people.
-----How dangerous it was ! -----Yes, but for the young man’s quick action, herun over by the car.
Chemical pollution will bring about a threat to agriculture and food chain, and to human health.