Xin hay nhất :333
`text{1.}` We haven't seen our uncle for nearly twenty years.
`text{2.}` If you practice your english regularly, your english will improve.
`text{3.}` A thermometer is an instrument which is used to measure the temperature.
`text{4}` I haven't seen David since 1989.
`text{5}` William suggested that Peter should complain to the company.
`text{6}` You didn't remeber to switch on the washing machine, did you?
`text{7}` The picture which Laura painted is being shown in an exhibition.
`text{8}` Although the children were poor, they seemed very happy.
`text{9}` Who does this car belong to?