1、Wecansaythenumber78,645inEnglishlikethisA.seventy-eightthousandandsixhundredandforty-fiveB.seventy-eightthousandsixhundredandfortyfiveC.seventy-eightthousandsixhundredandforty-fiveD.seventyeightthousandsix

Question

1、We can say the number 78,645 in English like this ___________
A.seventy-eight thousand and six hundred and forty-five
B.seventy-eight thousand six hundred and forty five
C.seventy-eight thousand six hundred and forty-five
D.seventy eight thousand six hundred and forty-five
2、The girl was often heard _______ happily in her room.
A.sing
B.to sing
C.singing
D.sings
有没有英语老师帮我解答一下.....
这两题，本身就是我们老师讲的答案和参考答案不一样，我也觉得老师的答案怪怪的，比如说他说第二题应该选B，我觉得不是，所以才来问问。
希望能够得到正确答案...

Answer 1

两题确实都应该是C
第二题是固定搭配,hear.doing,你们老师的意思,可能是因为这个句子是个被动句的原因而误解了,因为有些词组由主动转换为被动以后会由原来的形式变成to do sth.,如：make sb.do sth.转换为被动以后就变为了be made to do sth.,英语词组千变万化,有时候稍不留神就可能错