阅读下列各小题，根据汉语提示，用句末括号内的英语单词完成句子，并将答案写在答题卡上的相应题号后。
小题1:At that time people would starve if food _____________________ , especially during the cold winter months. (difficult)
在那个时代，如果食物难以找到，特别是在寒冷的冬月，人们就会挨饿。
小题2:For weeks on end people walked round the streets wearing masks, doing what they wanted without _____________________.(recognize)
连续几个星期，人们戴着面具走在街上为所欲为而不会被认出。
小题3:Not until all the employees were scolded _____________________ his absence from work. (account)
直到所有雇员都受到责备时，他才解释矿工的原因。
小题4:Wang Peng sat in his empty restaurant, _____________________.(feel)
王鹏坐在空荡荡的餐馆里，感到十分沮丧。
小题5:_____________________is why he left the country without telling anyone.(puzzle)
令我不解的是，他为什么悄悄地离开了这个国家。
小题6:It is a fact that our country _____________________ to provide low rent housing for the low income groups. (take)
我们国家已经采取措施为低收入群体提供廉租房，这是一个事实。
小题7:Our new campus is _____________________ of the old one. (size)
我们的新校园是老校园的五倍大。
小题8:People all over the world wonder ______________that happened in the plane before it crashed. (what)
全世界的人都想知道飞机坠毁前到底发生了什么。
小题9:When we reached the cinema, the film had begun, so we _______________. (start)
当我们到达电影院时，电影已经开始了，所以我们本应该早点儿出发的。
小题10:This is the place _____________________ the sea, the mountain and the lake together. (enjoy)
这里是你能同时欣赏大海、高山和湖泊的地方。
2MgO+C