Listen!Someone______ an English song now.A.sings B.sang C.is singing Dwas singing
-Hello, Jenny. Your box looks so heavy. Let me give you a hand. -_______I'm OK.
His father had an important meeting just now, _______?
-_______ can the batteries (电池) keep these cool iPhones and iPads working? - For about ten hours.
- Have you heard that six people killed a young woman in McDonald's in Shangdong? -_______ bad the news is.
The careless boy lost his key, _______ he had to wait for his mom in the cold.