Eating and drinking on Beijing subway is not allowed. If you the rule, you’ll face a fine (罚款) of up to 500 yuan.

His uncle went abroad in 2010, and_______since．

If we ______ the other road, we might have arrived here in time for the meeting.

The teacher asked me to ____ the exercise books before we began to do our homework.

There were some chairs left over ________ everyone had sat down