Don’t forget ________ the lights before you go to bed.
— Do you have any plans for the winter holiday?— Since you are crazy about music, why not go to some ________ concerts?
________ Mary ________ Jack is listening to the report carefully, because they are both interested in it very much.
I don’t make ________ clear when and where the parents’ meeting will be held.
The population of China_______ than_______ in Japan.
Only_______ of the students_______ passed the English exam.