______ arrival at the small village, they caught sight of the thick green trees in and around it and were attracted by the beautiful scenery .
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 theexperiment.
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, he run over by the car.
Chemical pollution will bring about a threat to agriculture and food chain, andto human health.