. How much does the ticket ______ from Shanghai to Beijing?
It took him half an hour _____ the work. A.doing B.to do C.did
The teachers are very friendly ______their students.A.to B.at C.on
His shoes are ___dirty ____he has to wash them . A.too, to B.so, that C.enough, that
She missed the bus,_____she had to walk home.A.so B.but C.because
The Greens will have ______holiday in China. A.two weeks B.two-week C.a two-week