No one ______ be more generous; he has a heart of gold.
| A．dare | B．must | C．could | D．need |
He was ______ by love, and expected nothing in return.
| A．drove | B．motivated |
| C．forced | D．compelled |
The ______ you sign your name can tell experts a lot about you.
| A．choice | B．way |
| C．method | D．means |
He said that very clearly so that nobody was in any ______ about what he meant.
| A．doubt | B．case |
| C．question | D．wonder |
In my opinion, life in the twenty-first century is much easier than ______ .
| A．that used to be | B．it is used to be |
| C．it was used to | D．it used to be |
It is often ______ that human beings are naturally equipped to speak.
| A．said | B．to say |
| C．saying | D．being said |