– We have done a lot to make our city cleaner, but it’s still not enough.– So we should do ________ to improve it.
Tony used to ______ to school ,but he is used to _______ to school now . A. walk ;taking a bus B. walked ;took a bus C. walk ; take the bus
They have already been to the place ____ their ancestors lived . A. whichB. whereC. when
---- ____ do you ______ cutting in line ? - ---It makes me annoyed . A. What , feel about B. How ; think ofC. How ; feel about
Don’t let the kid do so much housework .He is so young, ______ . A. thoughB. after allC. at times
Books are made ___paper and paper is made ____ wood . A. from; ofB. of ; fromC. of ; of