1£®Stuck(stick) in the traffic jam for two hours, they were late for the wedding party.

2£®It is a waste of time talking(talk) about such useless things.

3£®We don't permit smoking(smoke) in the classroom; that is to say, students aren't permitted to_smoke(smoke) in the classroom.

4£®The email received(receive) yesterday was about the meeting to_be_held(hold) tomorrow.

5£®Help others whenever you can, and you will make the world a nicer place to live in.

6£®I would be very grateful if you could inform me of your decisions at your earliest convenience(convenient)£®

7£®Try to spend your time just on the things you find worth doing(do)£®

8£®He said that we should get through the hard times together.

9£®In some languages,100 words make up half of all words used(use) in daily conversations.

10£®If you want to take photos here, you must ask for permission(permit) first.