1,Mr Li is too busy,won't be able to see the game.
2,how many of you have been to travel?
3 our homework must be hand in on time.
4.He has been married for 20 years
5.Measures must be taken to protect the earth from pollution
6 who will be invited to run the show next week?
7 in this park,unless you have a map,otherwise it's easy to get lost.
8 for them.See the beautiful scenery of such as often as before.
9 for her,as often as before to meet her parents is difficult.
10 I found him hard to get along with.
Since he left Beijing,we never met.
12 can you tell me when was the telephone invented by?
13 the scientists found that in the space travel is possible.
14.As long as you study hard,you'll make progress.