ce, too, the Red Cross is expected to send help________ there is human suffering

The national exam is approaching; it is high time that we should _____ our studies.

Helen alway s helps her mother even though going to school _____ most of her day.

I guess Peter and his sister Sally enjoyed __________ at the dancing party.

It is reported that in our country cities ________heavy air pollution that is 30 percent above the national standard or highershould try to meet standards by 2030.