Our company forbids ______, that is to say, we are not allowed ______here.
| A．to smoke; to smoke | B．smoking; smoking |
| C．smoking; to smoke | D．to smoke; smoking |
____ matters most in learning English is enough practice.
| A．What | B．Why | C．Where | D．Which |
I just wonder __________ that makes him so excited.
| A．why it does | B．what he does | C．how it is | D．what it is |
Engines are to machines _________ hearts are to animals.
| A．as | B．that | C．what | D．which |
____ team wins on Saturday will go through to the national championships.
A. No matter what B. No matter which C Whatever D. whichever
Nobody believed his reason for being absent form the class _____he had to meet his uncle at the airport.
| A．why | B．that | C．where | D．Because |