If you ______ the chat room ten minutes ago, you _______ what we were talking about.
| A．have joined ; will know | B．had joined ; would have known |
| C．should join ; would know | D．would join ; have known |
He was a much older tennis player, but he had a(n)_______over other players in experience.
| A．benefit | B．profit | C．power | D．advantage. |
There is even an animal whose tail will _____ so that it can run away if someone grabs it.
| A．break down | B．break up | C．break out | D．break off |
-----What were you up to when she dropped in?
------I______ for a while and _____ some reading.
| A．had played ; did | B．played; did |
| C．had played :was going to do | D．was playing; was going to do |
Nowadays the belief has become common ______ sea food and fruit rich in vitamin C should never be eaten at the same meal.
| A．that | B．how | C．when | D．/ |
Stop that foolish clapping._____ from you and you’ll celebrate Christmas by losing your position!
| A．Another sound | B．Hear another sound |
| C．Making another sound | D．Another sound to be heard |