（2014） ourselves from the physical and mental tensions，we each need deep thought and inner quietness.
| A．Having freed | B．Freed |
| C．To free | D．Freeing |
In today's information age, the loss of data _________ cause serious problems for a company.
| A． |
need |
B． |
should |
C． |
can |
D． |
must |
Without his support, we wouldn't be _________ we are now.
| A． |
how |
B． |
when |
C． |
where |
D． |
why |
Ordinary soap, _________ correctly, can deal with bacteria effectively.
| A． |
used |
B． |
to use |
C． |
using |
D． |
use |
A rescue worker risked his life saving two tourists who _________ in the mountains for two days.
| A． |
are trapping |
B． |
have been trapped |
C． |
were trapping |
D． |
had been trapped |
In any unsafe situation, simply _________ the button and a highly-trained agent will get you the help you need.
| A． |
press |
B． |
to press |
C． |
pressing |
D． |
pressed |