The professor put forward three issues, none of _____ we had ever done any research into before.
Friends are like leaves, _________ everywhere, but true friends are like diamonds, precious and rare.
Robert Collier once said, “A single idea——the sudden flash of a thought—— _________ be worth a million dollars.” A. should B. may C. must D, will
--Who is making so much noise in the garden? --_________ the children.
--You can’t imagine _________ fantastic fun web chatting is. --Really? But it may cause a lot of trouble sometimes.
They are against the proposal, for it _________ too much farmland.