----- Are you used to______ in the north with the old couples? ----- Yes, I am glad to find out that coal is used______ electricity for home use.
You are students in the No.168 Senior High School now, but you _______ in different junior high schools for three years.
I hope you can _______a solution to question as soon as possible.
It is believed that a new kind of drug _____ by the scientists and they are hopeful that they will succeed in a few months.
The speaker raised his voice _____ make himself _____ by the listeners.
We waited and waited.________ we had been looking forward to.