Once your business because international, _____constantly will be part of your life.
| A．your fly | B．your flight | C．fight | D．flying |
We live in an age____more information is available with greater ease than ever before.
| A．why |
| B．when |
| C．to whom |
| D．on which |
The workers ______ the glasses and marked on each box "This Side Up".
| A．carried |
| B．delivered |
| C．pressed |
| D．packed |
The weather turned out to be fine yesterday. I the trouble to carry my umbrella with me.
| A．should have taken |
| B．could have taken |
| C．needn’t have taken |
| D．mustn’t have taken |
Some aspects of a pilot’s job ___ be boring, and pilots often ___work at inconvenient hours.
| A．can; have to |
| B．may; can |
| C．have to; may |
| D．ought to; must |
--- Must he come to sign this paper himself?
--- Yes, he.
| A．need |
| B．must |
| C．may |
| D．will |