----- Nội dung dịch tự động từ ảnh ----- the streets. About 6.30 every weekday people I live in a big city and there is always busy traffic (1) often travel to work or to school in a hurry by bicycles, motorbikes (2)_ cars, so there is always heavy traffic. The same situation happens at 5.30 p.m. when everybody (3) home. As a result, there are often _crossroads or roundabouts during rush hours. Heavy traffic also causes (5) traffic jams at the (4) pollution and we are trying our best to use bicycles and buses more often to save the environment. 1. A. on 2. A. with B. in B. by 3. A. takes 4. A. busy 5. A. water B. gets B. noisy B. soil C. at C. and C. brings C. quiet C. noise D. of D. so D. keeps D. thin D. air