Anyone, once ____ positive for H7N9 flu virus, will receive free medical treatment from our government.
The school rules state that no child shall be allowed out of the school during the day, ______ accompanied by an adult.
__________ the students, the teacher came into the room smiling.
I have told you the truth. ______ I keep repeating it? A Must B Can C May D Will
Can you think of some cases ________ people can communicate only by means of body language?
A great number of students said they were forced to practise the piano.