(2013•无锡市) Don't throw away the waste paper. It needs__________so that it can be reused.
A. to destroy B. destroying C. to collect D. collecting
--- How much is the ancient bowl ____________? --- About thirty-five thousand yuan.
A. pay B. cost C. spend D. worth
--- Thank you for sharing your ruler with me. --- __________. That’s what friends are for.
A. With pleasure. B. It doesn’t matter. C. Don’t mention it. D. All right.
— We’ll have a picnic tomorrow. Do you know we will go for the picnic?
— How about riding bikes? It must be fun.
A. how B. where C. why D. what
— David, the weekend is coming. What shall we do?
—___________ go hiking in the countryside?
A. What about B. Why not C. Why don’t D. Let’s
— I can’t work out this Maths problem. I wonder who I should_________help.
— Why not ask Li Ping? He is good at Maths.
A. look for B. go for C. go with D. go to for