71, Minh's mother wrote a sick note for him yesterday

72, It takes him 3 days to travel to Ha CHi Minh last week 

73, This morning i ate bread and drank milk for breakfast

74, Why don't she have work hard everyday ?

75, We should wash the fruit carefully before eating it

76, It isn't easy to buy a cheap house now

77, My mother is a teacher and teaches math at the school near my house

78, You ought to eat a lot of vegetables because they are good for your health

71.Minh's mother wrote a sick note to him yesterday.

72.It took him three days to travel to Ho Chi Minh last week.

73.This morning I eat bread and drink milk for breakfast.

74.Why doesn't she have the work hard every day?

75.We should wash the fruit carefully before eating it.

76.It is not easy to buy a cheap house now.

77.My mother is a teacher and she teaches math at a school near my house.

78.You ought to eat a lot of vegetables because they are good for your health.