Waste water ____________________into Xiang River.It’s our duty to keep it clean.A. shouldn’t be poured B. mustn’t pour C. can’t pour
The harder you study, the______ knowledge you will know.
There _____ only a little milk in the fridge.
In order to protect the environment, we shouldn’t_ ____any trees. A.turn down B. put down C. cut down.
“Look!____ sunny day it is! How about going hiking?”“ That’s a good idea.” A.What a B. How a C. What
“Excuse me,could you tell me____?”“OK,It’s on Main Street.” A.where was the supermarket B. where is the supermarket C. where the supermarket is