—How long do you suppose it is he arrived here?
—No more than half a week.
A．since B．before C．that D．when
Did on time make the teacher angry?
A．she not come B．she didn’t come C．not her coming D．her not coming
—Thank goodness, you are here! What you?
—Traffic jam.
A．keeps B．is keeping C．had kept D．kept
You can hardly imagine the difficulty the woman had her children.
A．brought up B．to bring up C．bringing up D．to have brought up
Scientists are convinced the positive effect of laughter physical and mental health.
A．of; at B．by; in C．of; on D．on; at
Playing basketball is great fun; it also provides us with a chance to develop our sense of team spirit.
A．a;不填 B．不填;a C．a; the D．不填；不填
