Compared to the Western countries, _________ safe it is to live in China!
what
what a
how
what an
—When will you _______?—Tomorrow.
Mr. Brown wants to know your name. Please _____ on the paper.
—My parents ___ me to keep healthy. —You can do it if you exercise every day.
He may come, but I’m not sure _______ that.
—I find it difficult to learn English better. —______ you don’t give up, your dreams will come true.