Can you tell me ______ to join the army?
| A．how does a person have to be old | B．how old does a person have to be |
| C．how old a person has to be | D．how a person has to be |
---Why did you put the wood near the fire? It’s dangerous.
---Don’t worry. Wet wood won’t _______.
| A．burnt | B．be burnt | C．be burning | D．burn |
He’s unlucky, and he’s always suffering _____ luck one after another.
| A．a sick | B．an ill | C．sick | D．ill |
______ part that women _______ in society is great.
| A．The; play | B．A; take | C．A; play | D．The; take |
You are really very kind. I’ll never forget the _________you have done to me.
| A．favour | B．deed | C．help | D．good |
A computer is so useful a machine ________ we can use everywhere.
| A．that | B．which | C．as | D．what |