Where are you going during the summer vacation—I’ve found a nice beach ________ I can enjoyswimming.

What’s ______population of China —China has_____ population of 1.2 billion.

His father is a professor and has beenteaching in the university for more than twenty years — _____

as much firsthand information as possible,inspectors will hold workshops and distribute questionnaires, ____

There will a nice film in the school hall tonight.