— Tom is never late for work. Why is he absent today ?
— Something _______ to him.
| A．must happen | B．should have happened |
| C．could have happened | D．must have happened |
---Thank you for your timely help.
--- My pleasure. It is hardly talking about.
| A．worthy | B．worthwhile | C．worth | D．useful |
She has tried her best. Please don’t be too ______ about her job.
| A．special | B．responsible | C．unusual | D．particular |
______ abroad for more than two years, he returned to his hometown.
| A．Studied | B．Studying |
| C．Having studied | D．To study |
——Shelooksveryhappy.Shehavepassedtheexam.
——Iguessso.It’snotdifficultafterall.
| A．should | B．could | C．must | D．might |
The fact that so many people still smoke in public places____ that we may need a nationwide campaign to raise awareness of the risks of smoking.
| A．suggest | B．suggests | C．suggested | D．suggesting |