My pen doesn’t work well. Could I borrow _____, John?

—I ________ speak English in class because I’m afraid of making mistakes. —Don’t be shy. Believe in yourself and everything will be OK. 

--May I pick a flower in the garden? --No, you _________.

He ______be lazy, but he can work hard when he feels like it．

—Have you invited Alice to our party?—Yes. But she _____ come; she is busy nowadays.