231. In 1919, the May Fourth Movement ________, beginning with a large-scale new cultural movements in China.

232. A grander National Day will be observed on Tiananmen Square on October 1 every five years. Which of the following words can replace the underlined word?

233. The new president ______ last month after half a year election.

234. After the 1911 Revolution, China began to use the Gregorian calendar (solar calendar) and at the same we have also used the lunar calendar(阴历) in which a leap year (闰年)______ every four years.

235. --- I’d like to _____ you 100 yuan for the bicycle. What do you think of it?.

---OK. That’ that!

236. His order is _____ we ______ complete the task in five days.

237. Our teacher will _____ our class a picnic at the riverside tomorrow if the weather permits.

238. --- Ought he to get down to his work at once?

--- Yes, he _____.

ought                           B. ought to                   C. must                        D. should to

239. He_____ me 50 yuan and didn’t return it to me until last night.

240. It is an important problem. You should ________ before you draw a conclusion.