28.Having spent two days on one subject and _______ on the other subject, I am no longer worried about the exam.
—Hi, David, I heard you had an accident this morning. —Yes.Luckily, I hit the brakes in time ______ I would have been injured badly.
Mike seldom asks ______ questions in class, but today he raised ______ fairly good one.
—Do you have Mary's address? —Sorry, I don't have it ______ me at present.
--- He said you’d be giving them a lift. --- ____ There are already five people.
--- I wish I would succeed in the competition. --- Yeah, I understand how you feel.But ____hard?