Studies show the electronic devices people have made much use of ________ music may be causing hearing loss in many people.

Mary has been trained hard for the last two years —______ she did so well at the track and field meet yesterday

Their school days are busy and the children don’t get home _____7 o’clock p.m.

There is a big tree my house.

The number of the teachers in our school ____ over 400, and ____ of them are women teachers.