New ways have to be found to _______of waste materials and poisonous gases so that we can have cleaner surroundings
—Will you go to the party tomorrow, Xiao Hai? —No, ____ I was invited to.
It has been raining every day so far. I hope tomorrow will fine.
According to the recent research, heavy coffee drinking and heart attack is not necessarily and effect
It was in the village he once lived he got his junior education.
I ate ____sandwich while I was waiting for ____20:08 train.