—Why aren’t they here yet?
—They _______the bus.
| A．can have missed | B．must be late for |
| C．may have missed | D．might be late for |
—Mr. Wang is a man of few words, but quick in mind.
— , you know.
| A．A single flower does not make a spring |
| B．A man of words and not of deeds is like a garden full of weeds |
| C．A still tongue makes a wise head |
| D．A great talker is a great liar |
He got well-prepared for the job interview, for he couldn’t risk the good opportunity______.
| A．to lose | B．losing | C．to be lost | D．being lost |
_____from lightweight materials，the robots are about the size of a human arm or
smaller．
| A．To build | B．Being built | C．Having built | D．Built |
The fact that smoking is harmful to health is____most smokers are quite aware of．
| A．what | B．which | C．where | D．that |
An example of them is fraud, a crime _______ money is stolen by cheating others.
| A．which | B．that | C．what | D．where |