$31$. He usually takes (take) a taxi to the airport.
$32$. They don't Usually go (not go) to school by bike.
$33$. They Are they (be) beautiful?
$34.$ Manh isn't playing (not play) soccer at the moment.
$35.$ Minh is playing (play) chess with Nam at the moment.
$36.$ They often visit (visit) their parents on Saturday.
$37.$ she Is she studying (study) now?
$38.$ My and I always go (go) to the countryside.
$39.$ He isn't(not be) at home now.
$40.$ Hanh isn't reading(not read) book at the moment.
$41.$ Our teacher usually gives(give) us many exercises.
$42.$ He often catches(catch) a train to work.
$43.$ The cat catches(catch) mouse.
$44.$ They are planting(plant) trees overthere at the moment.
$45.$ My old friend, Manh writes(write) to me twice a month.