Steven has a lot of work to _______ in the office since he has been away for quite a few days.

I will appreciate it ______ you can change your plan a little bit to make it more workable.

Now that you have a job, you must exert (努力) yourself in ______ you do at work.

I am really scared to know the scores of the test! —________，why did you come here to see our teacher?

It is believed that a new kind of drug ______ by the scientists and they are hopeful that they will succeed in a couple of months. [ ]