A major earthquake _____8.0 on the Richter scale strongly _____ Wenchuan County in Sichuan Province at 2;28 p.m. on May 12, 2008.
_____ can you expect to get a pay rise.
Not only _____ polluted, but _____ crowded.
A middle-aged woman came _____ to the bus stop only_____ the bus had gone.
Only _____ as an interpreter _____ how important it was to practise speaking English.
Only when _____ possible to settle the problem.