Great changes have taken place sincethen in the primary school _______I am studying.

Lin Fei looks worried. What’s the matter__ His parents always talk about what will happen if he ________ succeed.

The eighth annual Beijing International Film Festival lifted its curtain on April 15, ________ 659 films from 71 countries and regions have entered.

The newcomers still don’t know ________ the difficult situation after practicing for 2 months.

“Show me your permit, please.” “Oh, it’s not in my pocket. It ______.”