--What __________ the number of students in your school? --More than 2,000. And a number of them __________ listening to English songs.
I believe ____________, because he is ________honest man.
Please listen to the teacher as _______ as you can in class.
Our city is one of _________cities in china.
It is necessary for us _______them every day.
I ______ go to bed ______ my father came back.