[11·北京中考]I knocked on the door, but ________ answered.
—To achieve a bright future, we should______ study hard____ keep in good health.—I agree with you.
Neither Kate nor her cousin _____ to Russia, but _____ of them have known the country very well.
—Jim feels stressed from time to time, but he doesn’t know ______ about it.—He can get help from his teachers.
He won’t give up ______ he ______ in achieving his dreams.
—Don't forget to come to our school assembly(集会)tomorrow morning.—I won't. I was___________ just now.