Have you known Dr Jackson for a long time? — Yes, since she _____the Chinese Society[ ]

You’d better get up _______ possible ____ you can catch the early bus.

Was Kelly late for the meeting —– Yes, the meeting _____ for 10 minutes when he_____ to the school.

Shall I help you with the washing up?—．I’ll do it later．

Can you solve such problems___raised by the audience