2002.10--------------------11

liul781

thanks!

真老九

这是一种固定的句型，It +be +时间长度+since+句子或者名词、名词性词组

liul781

11.         over 100 years since the invention of the square-bottomed paper bag.

(A)  Now is

(B)  Now it has

(C)  There is now

(D)  It is now

answer:  D

why D?    不是说it 放在句首有指代不清的嫌疑么？