The students by the teacher now will take part in the English Speech Contest of the school next month.
——Shall we go skating or stay at home? —— Which _____ do yourself?
___ nice, the food was sold out soon.
Who is it up ____ decide whether to go or not?
Wang Mei is one of many Chinese teenagers _____ “on the go”
He was born ____ a very cold night _____ December.