— ?—They are reading books.A、What do they doB、What did they doC、What are they doing
---This is my____ and these are her______.
---Is this your pen? --No, it isn’t. ----______this dictionary ?is it yours?---oh, yes, it’s mine.
---I lost my school ID card.---You can ask the teacher____ it, but you must call her____36404564 first.
---______is this girl?---she is my sister. ----______do you spell “sister”?---S-I-S-T-E-R.
______your schoolbag? It’s on the sofa.