`84.`There is a big library in Lan’s school.

⇒ Lan’s school has a big library

`85.` Lan learns Math very well.

⇒ Lan is very good at Math

`86.` Which subject do you like best?

⇒ What is your favourite sudject

`87.` Why don’t we go swimming?

⇒ What about going swimming?

`88.` The birthday cake is very delicious.

⇒ What a delicious birthday cake

`89.` When is her birthday?

⇒ What is her date of birth ?

`90.` Nam works more hours than Lan.

⇒ Lan works fewer hours than Nam

`91.` Nile river is longer than any rivers in the world.

⇒ Nile river is the longest river in the world

84 There is a big library in Lan’s school.

--> Lan’s school has a big library

85. Lan learns Math very well.

--> Lan is very good at Maths.

86. Which subject do you like best?

--> What is your favourite subject?

87. Why don’t we go swimming?

--> What about going swimming?

--> What about + Ving?

88. The birthday cake is very delicious.

--> What a delicious birthday cake.

--> WHAT + a/ an + adj + danh từ đếm được

89. When is her birthday?

--> What date is her birthday?

90. Nam works more hours than Lan.

--> Lan works fewer hours than Nam

91. Nile river is longer than any rivers in the world.

--> Nile river is  the longest river in the world