In the botanical garden we can find a(n) _______ of plants that range from tall trees to small flowers.
| A．species | B．groups | C．amount | D．variety |
237. Our teacher will _____ our class a picnic at the riverside tomorrow if the weather permits.
| A．organize | B．order | C．arrange | D．Operate |
236. His order is _____ we ______ complete the task in five days.
| A．which; should | B．that; will | C．that; should | D．that; must |
235. --- I’d like to _____ you 100 yuan for the bicycle. What do you think of it?.
---OK. That’ that!
| A．cost | B．spend | C．offer | D．Buy |
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.
| A．occurs | B．take place | C．breaks out | D．Orbits |
233. The new president ______ last month after half a year election.
| A．took office | B．took place | C．took his place | D．took the office |