We don’t need air conditioning, （ ）.

Only when （ ） in the afternoon （ ） able to leave.

We like our English teacher because she often tells （ ） funny stories in class.

Solar energy is a new kind of energy _____ that we can use to replace the traditional energy.

Language belongs to each member of the society, to the cleaner（ ） to the professor.

Fresh air, enough exercise and nutritious food （ ） to good health.

There is a warning at the bottom of the form that applicants are requested to hand in their forms _____ person.

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

() comes back first is supposed to win the prize.

Without the sun’s light （ ） the earth’s surface, no life could exist on the earth.

（ ） all her friends and money gone, Kate felt totally hopeless.

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