31.Your idea seems to be good but it isn＇ t.

154.The lecture, a lively question-and-answer session followed.

153.There are still many problemsbefore we are ready for a long stay on the moon.

152.Last night, there were millions of peoplethe opening ceremony live on TV.

151.The Olympic Games, in 776

150.I think it a great honorto hold a game in your place.

149.Something as simple asvegetables in childhood may help to protect you against serious illnessin later life.

148.Laura was away from Paris for over a week. When she got home, there were a pile of emailsfor her.

147.The airportnextyear willhelp promotetourism inthis area.

146.Ifto look after luggage for someone else, think twice.

145.When I was a kid, my mother used to sit by my bed, me stories till I fell asleep.