一、单项填空
1．—Daddy，look！Why______rainbow is like a bow?
—Oh，it is apologizing to______angry sky.
A．the；an B．a；/
C．a；an D．the；the
解析：考查冠词的用法。句意：“爸爸，你看！为什么彩虹像个弓？”“噢，它在向生气的天空道歉。” 第一个空考查“the＋名词单数”表示一类事物；第二个空用the表示特指“发怒的天空”。故选D项。
答案：D
2．Jack was very worried because that was not the first time that he ______ late for work.
A． had seen B．had been seen
C．was seen D．was going to see
解析：考查固定句式“it/that/this was the first time that后用过去完成式”。he与see之间是被动关系，由前面的worried看出他担心被看见，因此用被动语态。
答案：B
3．—Paul has gone abroad to try his luck.
