often takes him an hour to do his homework.
问题描述：
often takes him an hour to do his homework.
it often takes him an hour to do his homework.
he often ___ an hour ___ his homework.
my faxourite subject is _english_.（对划线部分提问）
___ ___ your favourite subject?
it is _may 1_ today.（对划线部分提问）
___ ___ ___ today?
she is _our english teacher_?（同上）
___ ___ she?
the meeting begins _at three o'clock today_.（同上）
___ ___ the meeting ___?
答
1 spends on
2 What is
3 what is it
4 Who is
5 When will begin