单项选择题

Why do pet dogs love performing tricks for their masters

A．To avoid being punished.
B．To show their affection for their masters.
C．To win leadership of the dog pack.
D．To show their willingness to obey.

<上一题目录下一题>

热门试题

单项选择题

Behavior problems of dogs are believed to______.

A．be just part of their nature
B．worsen in modem society
C．occur when they go wild
D．present a threat to the community

单项选择题

Excuse me. If your call' s not too urgent, do you mind ______ mine first

A．I make
B．if I make
C．me to make
D．that I make

相关试题