【单选题】
-________ keep water running when you are brushing your teeth or washing your hands, Jack. -OK. I know we must save every drop(滴) of water.
【单选题】
The flower is dead. I ____ it more water. ?
【单选题】
13.Oil floats if you ______it on water.
【判断题】
请判断下句是否语法正确。When heated, ice will be changed into water.
【单选题】
A: Do you know Marks phone number? B: [填空] . A: OK. I might as well look it up in the phone book.
【单选题】
The plants died for____________ water.
【单选题】
Electric power is produced by __________ water.
【单选题】
Man________die without air or water.
【单选题】
15.Man _____ die without air or water.
【单选题】
If you check the route to your ____before starting off, you will save much trouble.