She’s going to have problems finding a job ______she gets good marks.
There aren’t many seats left for the concert; you had better make sure ____ two today.
Examination compositions, together with most business letters and government reports, are the main situations ____ formal language is used.
If you don’t keep the meat in the refrigerator on such a hot day, it may ____.
Doing your homework is a sure way to improve your test scores, and this is especially true ____ it comes to classroom tests.
By the time you arrive home, I ____, so please don’t make any noise when you come in.