x
a.
`1.` How long is it since your father start to do judo?
`2.` The last time we ate durians was 4 years ago.
`3.` No one in my class is the more intelligent than Mr. Buong.
`4.` Tuan doesn't play soccer as well as Nam.
`5.` This is the first time Mrs. Tuyet visited Hue.
b.
`6.` Mi has started playing the piano for 2 years.
`7.` Nam is the best student in my class.
`8.` Are there fifteen classrooms in Phong's school?
`9.` Mr. and Mrs. Buong went to Ho Chi Minh city by plane last week.
`10.` Mount Everest has much height than Phanxipang.
$@bangtann$
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