六、短文改错
I took part in a geography research study group in last term. Our 71 ______
topic was environmental pollution and protection. We took a variety 72 ______
of pictures showed the present pollution conditions of our city. To 73 ______
our surprised, there are still a lot of people doing silly things to our 74 ________
surroundings. Some people throw the rubbish anywhere they like, 75 ________
some cars give off harmful gases, and waste water is poured in 76 ________
rivers by some factories. Worse still, people sometimes had to make 77 ________
their ways through dusty winds as a result of pollution. Through 78 ________
our research, we come to know what everybody must pay attention 79 ________
to our environment and some measures should be taken to protect. 80 ________
