1-Ten years are a long time.
2-The boy with his dog are here.
3-Mr .Smith , accompanied by his wife and three children ,have just arrived.
4-A cigar or a cigarette are very enjoyable.
5-Neither George nor Henry have come yet.
6-Each of the boys have gained a prize.
7-Everybody were doing his best.
8-It is he who are wrong.
9-I never am a loss for a word.
10-Birds of feather flock together.
11-They were much of size.
12- I want to keep this secret.
13- Life we live here is hard.
14-Are you coming to dinner that we are having in London next week?
15-I have cold in the head.