______ has an internal clock that regulates the beating of our hearts, and the ______ of our breathing.
| A．Mankind; step | B．Human; pace | C．Human being; step | D．Man; pace |
_________ team wins on Saturday will go through to the national championships．
| A．No mater what | B．No matter which |
| C．Whatever | D．Whichever |
The professor, _____ some of his assistants, _____ to attend our discussion this afternoon.
| A．and; is | B．as well as; is | C．or; are | D．except for; are |
______ is often the case, we have worked out the production plan.
| A．Which | B．When | C．What | D．As |
He didn’t make ________ clear when and where the meeting would be held.
| A．this | B．that | C．it | D．these |
In an attempt to save money, some housewives like to go from shop to shop to search for real _______.
| A．comments | B．champions | C．bargains | D．traditions |