I/ Chọn câu trả lời đúng 1.Drivers should slow … on this road because it is slippery after rains. A. On B. Down C. Up D to 2. Pollution has bad ef
I/ Chọn câu trả lời đúng 1.Drivers should slow … on this road because it is slippery after rains. A. On B. Down C. Up D to 2. Pollution has bad effect … out life A of B to C with D on 3. Before you light … a cigarette, remember to ask for permission … Đọc tiếp