1 . Pablo Picasso is one of the most famous artists in the world, ______ full name is really a long one, in fact a mixture of many names.

A．which

B．whose

C．who

D．whom

2 . Shenzhen Bay Park, ______ migratory birds take a rest every year, attracts a lot of birdwatchers.

A．where

B．which

C．when

D．that

3 . In 2018, more than 760 million people in China participated in the sharing economy,          about 75 million were service providers.

A．which

B．when

C．of which

D．as

4 . Mozart composed many famous operas during his final years, ______ were largely unfinished when he died.

A．that

B．when

C．which

D．for which

5 . This aspect will be discussed further by Crane in the next lecture, ________ I mentioned just now.

A．whom

B．why

C．that

D．when

6 . Athletes from Asian countries are excited about coming to Hangzhou, ______ the 19th Asian Games is held.

A．where

B．why

C．which

D．when

7 . Water is really crucial to us human beings, ______ we couldn’t live.

A．without it

B．without that

C．without which

D．if not

8 . He hid himself in a tree, from _________ he could see the enemy in the distant.

A．which

B．that

C．where

D．whom

9 . Students will encounter many challenges in the universities for the first year,________ getting used to a new environment quickly comes to be the most important one.

A．of which

B．for which

C．to which

D．by which

10 . The killer was caught at a pub ________ he was drinking, ________ was a great comfort to us all.

A．which; which

B．where; which

C．where; that

D．that; which