Walking in the morning _______ your health.A. are good forB. is good forC. is good at
She told us that her brother ______ the Army for 3 years.
---Are the new rules working? ---Yes. _______ books are stolen.
--- Look! What's in_______ sky? --- Oh, it's _______ UFO. I wish I could fly in_______ space some day.
–– Would you like to play table tennis with us after school?–– _________.
–– Let’s fly kites.–– _________.