What ________ the number of the students in your school —-About two thousand. A number of them ________ from England.

What would you do if it ______ tomorrow ?—We have to carry it on , since we’ve got everything ready .

The director will by no means turn the actress awayall she is considered the most qualified for the role．

___thefact that doctors have warned that smoking causes cancer, people still keep onsmoking

There are so many good books. I really don’t know ____ .