1 . Experts suggest that parents should let their child do tasks that he is physically and mentally capable of doing by himself, ______ will help to build a self-confident kid.

A．that

B．who

C．which

D．what

2 . Tom has gone to Shanghai,_____ is in the east of China.

A．where

B．who

C．which

D．that

3 . Don’t take up other people’s personal space, ______ will bring much inconvenience to them.

A．where

B．which

C．what

D．that