We all think it is Mr Wang as well as hisparents that _______ for his son’s bad performance at school.

This is _________ best film I have ever seen. This means I have never seen_________ better one.

The students put down their pens when the teacher_____ them to stop writing.

She has made up her mind that she will make _____ as her sister has made [ ]

Flight attendants usually need to arrive at the airport ______ before their flight leaves