81, My parents didn’t let me stay out late when I was young. I wasn’t allowed …………………………………………………………………… 82, How long was your flight from Hanoi to Jakarta? How long did ………………………………………………………………………. 83, George can cook very well. George is …………………………………………………………………………… 84, Phillip usually works hard. Phillip is ……………………………………………………………………………. 85, I am not as good at Math as my brother. My brother ………………………………………………………………………… 86, They won’t be able to come on Saturday. It will be impossible ……………………………………………………………….. 87, Their father got to London by taxi last Monday. Their father ………………………………………………………………………… 88, Listening to music is much more interesting than going to the circus. I prefer ……………………………………………………………………………… 89, We didn’t enjoy the trip because of the heavy rain. The heavy rain prevented …………………………………………………………… 90, You shouldn’t eat too many candies. You had ………………………………………………………………………

`Đáp` `án:` 

81. I wasn’t allowed to stay out late by my parents when I was young.

S + was/were + (not) + V3/ed: bị động - QKĐ

be allowed + to V: được phép làm gì 

82. How long did it take you to fly from Hanoi to Jakarta?

How long did it take + (O) + to V? mất bao lâu để làm gì 

83. George is a good cook.

S + be + (a/an) + adj + N 

84. Phillip is a hard worker.

S + be + (a/an) + adj + N 

85. My brother is better at Math than me.

S + be+ better than + O :ss hơn 

good - better (ss hơn) - best (ss nhất)

86. It will be impossible for them to come on Saturday.

It + be+ adj + (for O) + to V 

87. Their father took a taxi to London last Monday.

take a taxi: đi taxi = by taxi

S + V2/ed: thì QKĐ

88. I prefer listening to music to going to the circus.

prefer Ving to Ving: thích làm gì hơn làm gì 

89. The heavy rain prevented us from enjoying the trip.

prevented sb + from Ving: ngăn chặn ai làm gì 

90. You had better not eat too many candies.

had better + (not) + V1: (không) nên làm gì