Doctors are doing research to find out what happens physically when people ______ smoking.
#70961
A
quit  
B
decline
C
depart 
D
reserve
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According to some scientist , every human being, _____, gives off body heat.
#67632
A
what he is doing
B
however he is doing
C
whatever is he doing
D
no matter what he is doing
 I can hardly hear the radio. Would you please _________
#82808
A
turn it on
B
turn it down
C
turn it up
D
turn it off
When the audience heard the funny story, they _____ laughter.
#68095
A
burst out
B
burst into
C
broke out
D
broke into