Mary and Joy are ____ Class One. They are ____ the U.S.A. A. from; in B. in; from C. to; from
---Why are you so happy?--- ______ the teacher’s help, I found the answer ______ the question.
--- Would you please bring me the menu?--- Sure,here you are. ____________ , I will come back for your order.
---When will the railway that connects the two cities open?---_____ next year.Only two thirds been built.
Boys_________ model planes to dolls, while girls _________ have dolls than model planes.
Mr. Wang _______drive to work, but now he _______there by bike to keep healthy.