In today's information age, the loss of data _________ cause serious problems for a company.
| A. |
need |
B. |
should |
C. |
can |
D. |
must |
If you don't understand something, you may research, study, and talk to other people _______ you figure it out.
| A. |
because |
B. |
though |
C. |
until |
D. |
since |
Many airlines now allow passengers to print their boarding passes online ______ their valuable time.
| A. |
save |
B. |
saving |
| C. |
to save |
D. |
saved |
Jane moved aimlessly down the tree-lined street, not knowing ______she was heading.
| A. |
why |
B. |
where |
C. |
how |
D. |
when |
______ birds use their feathers for flight, some of their feathers are for other purposes.
| A. |
Once |
B. |
If |
C. |
Although |
D. |
Because |
-______ that company to see how they think of our product yesterday?
-Yes. They are happy with it.
| A. |
Did you call |
B. |
Have you called |
C. |
Will you call |
D. |
Were you calling |