A.Use bikes instead of cars. | B.Use mobile phones every day. |
A.wasted | B.wastes | C.waste |
A.We shouldn’t waste time. |
B.Everyone needs water. |
A.walk | B.walking | C.to walking |
A.not | B.needn’t | C.shouldn’t |
A.save | B.waste | C.drink |
A.are | B.not | C.shouldn’t |
A.to | B.at | C.of |
A B C