Listen!Someone______ an English song now.A.sings B.sang C.is singing Dwas singing
The problem is __________ for Tom to work out.
Tony will visit his uncle’s farm _________ two weeks.
Please tell them _________ here. It’s dangerous.
-- I am going to Paris on holiday this May Day. -- Really? _______.
--You've never been to China, _______? --_______. I've been there three times.