You ought to be stricter _____ your son; it’s no use only being strict _____ his work

Although Diane survived the car crash, her arms and legs were badly injured and ______, her car was destroyed.

He kept thinking of the question whether it was _____ for his father to change the habit of a life time in such a short time. [ ]

The shop will be closed for repairs ________ further notice.

US First Lady Michelle Obama encouraged（鼓励）students to study abroad in her ____when visiting Peking University (北京大学) on March 22, 2014.