1 . St Petersburg,___________ is a very beautiful city, was once called Leningrad.

A．who

B．that

C．where

D．which

2 . The weather turned out to be very good, ________ was more than we expected. （用适当的词填空）

3 . Reading books, _____________ takes the reader to other worlds, is a wonderful way to enjoy life.

4 . You can find whatever you need at the shopping Centre, ___________is always busy at the weekend. （用适当的词填空）

5 . Beijing Expo 2019, ____ lasts for 162 days, is held in Yanqing from April to October.

6 . That evening,   ________ I will tell you more about later, I ended up working very late. (用适当的词填空)

7 . It is snowing heavily,________makes children feel excited.(用适当的词填空)

8 . As a child, Jack studied in a village school, __________is named after his grandfather. (用适当的词填空)

9 . She and her family bicycle to work,___________helps them keep fit. （用适当的单词填空）

10 . There are three bedrooms in the house,______is Mary’s.

A．the smallest of which	B．the smaller of which
C．the smallest of them	D．the smallest of all