When he got off the bus,it happend_B_.

题目

When he got off the bus,it happend_B_.
A to rain B to be raining C raining D to raining2._C_from the moon,the earth with water__seventy percent of its surface appears as"a blue ball" 为什么?A seen;coverd B .seing;covering C.seen;covering D to see;to cover3.We walked as fast as we could ,__to get there on timeA hoping B to hope C hoped D being hoped 为什么不是A4.They knew him very well.They had seen him__up from childhoodA grow B grew C was growing D to grow 什么不是D5.The examination was so difficult that almost everybody failed__it.A in passing B to pass C to have passed D passing为什么不是A?6.__into many languages,but with quite a long historyA being translated B having translated C to be translated D having been translated为什么是D?7.Travelling is __,but we usually feel__when we are back home from travel.A interesting;tired B interested;tiring C interesting;tiring D interested;tired?8.Althouh she saw so many people_in front of her,she looked calmAsiting B seating C sit D seated9.__for many years,nob

答案

1.happen to do sth 在A. B中排除,而用的是when,表示在那个时间点,应该用现在进行时,选B 2.选A,意思是从月球上看,地球表面的水覆盖率是70%看起来像个蓝色的球.两个句子的主语应该都是the earth,第一句地球应该是被看...