______ it is true that a student's most important goal is to do well in his or her studies, it doesn't need to be the only goal.
It remains to be seen _______the newly formed committee’s policy can be put into practice.
— How far can you run without stopping?— ________. I’ve never tried.
Anyone, once _______ positive for H7N9 flu virus, will receive free medical treatment from our government.
My uncle hasn’t been able to quit smoking, but at least he has_________ .
—What about your self-drive trip yesterday?—Tiring! The road is being widened, and we______________ a rough ride.