When I walked past the park, I saw some old people______chinese Taiji. A.do B.did C.doing
I don’t know if he_______, if it_______tomorrow.
---I hear Tina_____to appear in the advertisement. Is that true? ---Oh, yes. She is busy preparing for it these days.
---Listen! Kate is singing in the classroom. ----It_____be Kate. She has gone to the Library.
The songs of Coco sound________. Her CDs sell_______.
Bob has made a lot of promises, but______of them have been carried out.