On National Day there are more than five __________ people in the zoo.

I missed the beginning of ________musical programme The Voice of China. —What a pity! You should leave school half _______ hour earlier.

Listen! . —Oh, let’s go to the classroom. [ ]

______ of his time ______ been spent on studies every day.

I didn’t know when he _____ back. He said he would call me when he _____ home.