Have you got any books on English grammar I want toborrow______.Yes, here you are. But you must return it by Friday.

They must have gotten to the top of the mountain by now. They_____ before the sun rose.

______ it is true that a student’s most important goal is to do well in his or her studies, it doesn’t need to be the only goal

The number of people ________ this happens is not very large.

Don’t wake up your sister, Ben. She needs a good sleep. —________.