My friends __________ come to see me. I don’t want to go out in case they come.
News has been put forward ________ more middle school graduates will be admitted into universities.
The reason why he didn't come to school was ________ he was ill.
Does ________ matter much if they do not come tomorrow?
The bell ____ the end of the period rang and we had to stop our discussion
One-third of the area ________ covered with trees. About seventy percent of the trees _______ been planted recently.