It’s raining hard. ________, my parents are still working in the field.
I can’t remember when exactly she left ________city. I only remember it was ________Sunday
--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?-----___________.