请从下列选项选择一个正确的填空 How many books are there? ________one book.
A.
There's
B.
There're
C.
They're
D.
It's
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
参考答案:
举一反三
【单选题】The exploitation of the power in the Sun's rays is a form. of alternative energy now showing new commercial promise. In the US, manufacturers have made important 【C1】______ in the development of the t...