He （ ） yesterday morning, and would stay for three days.

Dentists suggest brushing teeth at least twice a day to _____ them from decaying.

The number of deaths from heart disease will be reduced greatly if people _____ to eat more fruit and vegetables.

The two parties haven’t reached any agreement, but decided to set another date for （ ） talks.

What （ ） would happen if he told mom and dad what we had done?

The children have been （ ） since their father left．

Do you mean this is the_____decision you have made after thinking for hours?

The Quality Control Staff is responsible _____ the quality of the products that come out of the factory.

Our teachers always tell us to believe in （ ） we do and who we are if we want to succeed.

Our main concern is to _____ the living standard of the people.

The hotel was reasonably comfortable but the food lacked （ ） and the service was poor.

（ ） is careless when disposing of his wastes.