Time goes by so fast . We must never miss the chance to show love for our parents and make them _____ how much they mean to us .
---What's ________ wrong with you?--- I have ______ sore throat.
--Why is she at Xiao Ying’s home? --_________ they are friends.
We are ________ a school trip..
---When is Christmas? --- It’s _____ December 25.
---Is Nancy doing her homework? -----___________.