________ from endless homework on weekends, the students now find their own activities, such as taking a ride together to watch the sunrise.
A．Freed B．Freeing C．To free D．Having freed
Few people paid full attention to their health conditions ________ they were seriously ill.
A．when B．if C．until D．after
Children, in my opinion, ________ creative ability is unthinkably rich, ________ is seldom taken notice of by us, should be trained in that area.
A．which; that B．whose; which C．which; which D．whose; that
A warm thought came to me ________ I might help wash my mom’s feet on Thanksgiving Day.
A．if B．when C．which D．that
--Have you got a digital camera?
---No.
---You should buy________.
A．one B．it C．that D．this
________ for the fact that she broke her leg, she might have passed the exam.
A．Hadn’t it been B．Had it not been C．Was it not D．Were it not
