A medicine may help with your illness, but it may make you      , so you must be careful not to drive a car after taking such a medicine.

She worries __________,so she often feels much___________.

—Peter’s father is a _______ math teacher.—I think so. He teaches _______.

Mr. Chen is handsome and kind and he is one of _________ in our school.

Many visitors come to Beijing because it is ________ city.