---Can you see some people are waiting _______ the library?---Yes, They are standing in a queue in front of its gate.A. around B. inside C. outside
Sam can sing English songs _________, but I can’t.
— Can you play the guitar? — _________________.
We are playing football. Come and _____________ us.
My teacher helps us _______ swimming.
My mother is a nurse(护士) and is good _______ kids.