问题
选择题
Is that a book on farming?_______,I want to borrow it.
A．So it is
B．If so
C．So is it
D．So if
答案
答案：B
B解析：句意为：那是一本关于农业的书吗?如果是的话，我想借。so it is的确如此，表观点.看法一致；so is it它也是；so if没有这种表达法；if so如果这样。本句是if it is so的省略，故选B。