新概念英语2册I spent the whole day in my room
the whole day 是固定用法啊，没有 a whole day 这种说法的
1.We have to at theatre by 7 o'clock this evening
2.I think she must be thirty years old
3.He has got to the airport before 10 o'clock.
4.do you have to tell everyone our secrets ?
5.must you go to work today ?
6.i think he must be supid to wear clothes like that
7.I has got to study very hard for my next exams.
8.if he buys her presents like that ,i think he must love her very much