comb( )

A:trouble B:club C:lab D:doubt

bud（）.

A:future B:flute C:bush D:function

now（）.

A:how B:follow C:yellow D:window

satisfy（）.

A:industry B:apply C:happy D:sleepy

satisfy（）.

A:industry B:apply C:happy D:sleepy

bud（）.

A:future B:flute C:bush D:function

stomach（）.

A:punch B:headache C:chase D:teach