It was March 11, 2011 ____ magnitude-9.0 earthquake struck Japan and subsequent tsunami triggered the large-scale crisis.
—You can’t imagine ____ fantastic fun web chatting is. —Really? But it may cause a lot of trouble sometimes.
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 ____.
_____ the teacher's suggestion, Tom finally found a way to settle the problem.