—Susan, go and join your sister cleaning the yard.—Why________? John is sitting there doing nothing.
Mr. Zhang is the best music teacher in our school, but he has hurt his left foot and cannot ________tomorrow’s concert.
The students ______ to write English words carefully from the beginning.
This famous article written by Henry is well worth , but I think it is not worthyat all.
It’s difficult for him to without a car.
The company alwaysgreat importance to the quality of their products. That’s why there is always a steady increase in sales year by year.