Our teacher was very happy because _____failed the examination.

It is not immediately clear__________ the financial crisis will soon be over

rents were teachers in that school, _______ losttheir lives in order to save their students in the earthquake.

Who is the man over there Is it Mr. Li –No, it _______ be him. Mr. Li is much taller.

If parents leave their children on own,do you think the home is tidy or untidy when they return