__________，the gathering crowd burst into applause.
| A．On entering the hall |
| B．When he entered the hall |
| C．The speaker took his place |
| D．No sooner had the speaker entered |
It is no ________arguing with Bill because he will never change his mind.
| A．use | B．help | C．time | D．way |
At the meeting they discussed three different ________o the study of mathematics．
| A．approaches | B．means | C．methods | D．ways |
The ________on his face told me that he was angry．
| A．impression | B．sight | C．appearance | D．expression |
Always read the_______on the bottle carefully and take the right amount of medicine．
| A．explanations | B．instructions | C．descriptions | D．introductions |
The novel is of great interest. _____ can be enjoyed unless you digest it.
| A．Nothing | B．Something | C．Everything | D．Anything |