49、You look tired these days.I think you need a _____ sleep.

46、A person who is _____ does not tell lies or cheat people.

45、I _____ ride a bike to school.But this morning，I walked to school.

44、I saw Jeff in the park.He _____ on the grass and reading a book.

43、--Are Sandy and Kate ___good friends? --Yes，they are.Please look after____.

42、--_____people are there in your family? --Three.

41、_____ you smile at others，they will smile back.

40、If she doesn＇t want to go， nothing you can say will __________ her.

39、This food is free.You don＇t have to _____ it.

38、Most of the artists _______ to the party were from South Africa.

37、Franklin told them all _____ to be in Britain again.