_______ at people when you talk.This is a polite way of communication in China.（ ）
| A． |
Look |
B． |
Looking |
C． |
To look |
D． |
Looked |
_______ at people when you talk.This is a polite way of communication in China.（ ）
| A． |
Look |
B． |
Looking |
C． |
To look |
D． |
Looked |
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