Your mother isn’t a doctor, is she?—-___________. She teaches English in a middle school.

The subjects in our school are ______ those in their school. [ ]

About ______ students went to the show yesterday.

When the little boy saw his mother, he _______ very excited.

At present , the terrible foggy haze（雾霾）weather has influenced our normal life badly . So our government should _____ to reduce the air pollution.