—The two people speak different languages and can not communicate with each other well.
—Oh，I see. That’s ________ misunderstanding occurs.
| A．when | B．what |
| C．which | D．why |
Only five years after Steve Jobs' death, smart-phones defeated _________PCs in sales.
| A． |
controversial |
B． |
contradictory |
C． |
confidential |
D． |
conventional |
In 1963 the UN set up the World Food Programme, one of_____purposes is to relieve worldwide starvation.
| A． |
which |
B． |
it's |
C． |
whose |
D． |
whom |
He hurried home, never once looking back to see if he_________.
| A． |
was being followed |
B． |
was following |
C． |
had been followed |
D． |
followed |
We choose this hotel because the price for a night here is down to ＄20, half of_________it used to charge.
| A． |
that |
B． |
which |
C． |
what |
D． |
how |
Working with the medical team in Africa has_________the best in her as a doctor.
| A． |
held out |
B． |
brought out |
C． |
picked out |
D． |
given out |