They ____ repairing the wall. The _____ was smooth(顺利).
---How much difficulty did you have________________ this physics problem? ---_____________. It's quite easy.
----______number of cars on the roads is growing too fast. ----I agree with you. ______ number of problems have appeared already.
――Good morning! My name is Jenny. I work for a sports newspaper. ――_______. What can I do for you?
――What did the Geography teacher ask you? ――The question is, “ Do you know _______?”.
_______ your mind and study hard, and you will be sure ________English well.