The shop ________ from Monday to Friday. It’s ________ at weekends.

___ we admit that there are still someproblems about the system of modern education, we don’t mean that it is of nouse

Would you like______ to eat —Yes，please.

You can not imagine the difficulty they had ____ the problem It isn’t ____ easy [ ]

The preschool children who watch TV programs with violent scenes are more likely to have sleep problems than those who watched programs for the age.