________ is known to us all, our government has spared no efforts to control food prices.
| A．What | B．Which |
| C．As | D．It |
_______ you go , you will be warmly welcomed .
| A．No matter where | B．No matter what | C．Whichever | D．However |
We’ll never give up _______ they may do or say .
| A．although that | B．no matter how | C．whatever | D．however |
No matter how hard he worked, ___ ____
| A．he could not do any better | B．and he could not do any better |
| C．so he could not do any better | D．but he could not do any better |
I’ll start early , _______I oversleep.
| A．unless | B．though | C．if | D．whether |
_______ you begin the work , you must carry it out through to the end.
| A．When | B．Though | C．Sometimes | D．Once |