____ it rain tomorrow, I’d stay at home.
| A．Should | B．Would | C．When | D．If |
I’ll show you the store ____you may buy all ____you need.
A that; that B which; that C where ; which D in which; /
______ is known to all, working in such a place needs great determination.
| A．It | B．That | C．Which | D．As |
As rainforests are being _______, the environment pollution is becoming more and more serious.
| A．cut off | B．cut down | C．cut in | D．cut up |
Recently I bought an ancient Chinese vase, _____ was very reasonable.
| A．which price | B．the price of which | C．its price | D．the price of whose |
With all the passengers ________, the plane took off.
| A．on the board | B．on board | C．on the boards | D．on boards |