She studies ___ medicine before she turned ___ writer.
A teacher is __________ to be patient and not to lose his temper whatever mistakes his students make.
It __________ her to feel his arms around her.
Lucidly he is going to attend Qinghua University, __________ his sister graduated last year.
—What do you think of the standard of the new curriculum (课程)? —It is certain to have a great __________ upon the future of both teachers and students.
Old people need special care in winter, as they are very __________ to sudden change of the weather.