During the next ten years we both worked day and night to

_____ the money we had borrowed.

A. pay off    B. pay for    C. pay to    D. pay back

The teachers are doing what they _____ their stuaits.

A. can to teach    B. can teach    C. can teaching  D. can to teaching

The college entrance examination is coming, the students are _____ it.

A. preparing    B. prepared for     C. prepared    D. preparing for

It' s too late to go out now. _____, it's starting to rain.

A. Besides    B. Meanwhile    C. However   D. Anyhow

Before the economic crisis came, John had sensed that the firm was to be ruined and he 

    just in time.

A．pulled up  B．pulled out C．pulled off D．pulled down

We have a meeting every second weeks.

It won’t be long after he realize his mistake and apologizes to me.

The two students met the first time at the beginning of this term.

Now that you have accepted the task, the only thing you can do now is ______ on how to fulfill it.

A. reflect                             B. try                                    C. think                                D. act

Parents feel they don’t have the ability to influence children’s decisions ______ children feel their parents’ goals are hard to achieve.

  A. although        B. while          C. until        D. unless