问题

You can watch TV ______, but you can’t watch it ______ a long time.
A:one, at
B:one, for
C:first, for
D:first, at
B:one, for
C:first, for
D:first, at
正确答案是:
同类题型
He promised to pick me up at the school gate. However. he __ yet.
It was a long journey, but _____of them four felt boring.
I’ve got to go now. —Must you? I ______ you could stay for dinner with us tonight.
Why does Liu Tao look all day long?
My sister likes playing_____guitar and she also likes playing______soccer.