My mother ___once a week.
—The transportation in our country is much more ______than it used to be.—But traveling becomes much easier!
—Are you sure you can do well in this mid-term exam, Lucy?—______.I’ve got everything ready.
_____useful book it is!
______ leaves the room last should turn off the lights.
—At present, one of the best ways to study is working in groups.—More chances ________ to students to learn from each other.