Many students find it hard to ______ the rules in this school.[ ]

After a heated discussion , an agreement _____ and the meeting ________ .

No matter how frequently _____ the works of Beethoven always attract a large number of people.

There are ______ people in the room, so it’s very crowded (拥挤的) .

This still leaves the question of ______ local public services should be improved in the next five years