1 . The bookstore, ________ was a legendary fixture in the neighbourhood, was a place where anyone could ________ and connect through their love of books.

A．as; drop in at

B．which; drop in

C．it; drop in on

D．where; drop out

2 . Thanksgiving Day __________ an entirely different look in China, __________ malls and e-businesses are competing in sale promotions as the holiday approaches.

A．takes on; which

B．takes up; where

C．take on; where

D．takes up; which

3 . Many experts attended the conference, ______________.

A．most of whom from America	B．most of them from America
C．most of them were from America	D．most of whom were from America

4 . The police finally got to the place, ___________ was once a school, and successfully saved the boy. (用适当的词填空)