50.《左传》是一部( )

278. I was ()in a small countryside in China.

277. I’m going to take an early bus ()I can get there in time.

276. Chinese martial arts are() great interest () many foreigners.

275. ()what he said， he checked the company’s website and downloaded the drivers in question.

274.The sun is the center of the universe， () we know.

273.By now we () learned 3000 new words.

272.Take your camera with you. We’d like to take some () of the beautiful park.

271.---Would you mind my opening the window?---().

270.---Hello， may I speak to LiHua? ---Yes， ().

269. Let’s give the patient () hand. ()ambulance is waiting for us outside ()school.