-- What’s your plan for this winter vacation? -- I’ll take an express train to Dalian for my holiday ______ school ends.
Gunpowder is generally believed __________ in ancient China.
It was __________ great shock to the world that a French airplane got missing over __________ Atlantic Ocean on June 1st, 2009.
I feel nervous before the exam. -- __________. It won’t be too difficult for you to pass.
-How was Nadal’s cooking? -Oh, _______. I was quite impressed.
A goodbye party was held to _______ his 30 years’ service to the army.