My sister is only two years old, and I have to _____ her on Sunday.
—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.