—In a text message，88 means Bye－bye．
—And another example is F2F_______stands for face to face．
| A．that |
| B．who |
| C．whom |
| D．it |
We can’t do well in exams we study hard.
| A．if | B．and | C．since | D．unless |
As a student, it is your to study hard.
| A．duty | B．mistakes | C．notes | D．challenge |
When I have problems I often ask my father .
| A．to helping | B．help | C．for help | D．to help |
Can you tell me the best way the problem?
| A．solve | B．solved |
| C．to solve | D．solving |
We must learn how these “problems” “challenges”.
| A．change in | B．change，into |
| C．to change , into | D．to changed, into |