The experiment shows that proper amounts of exercise, if ______ regularly, can improve our health. 
#81315
A
being carried out
B
carrying out
C
carried out
D
to carry out
推荐题目
Not a single word ____ last night.
#84440
A
he said
B
said he
C
did he say
D
had he said
______ that no one was ever prepared for it.
#84541
A
So suddenly did the bad news come
B
So suddenly the bad news came
C
So did the bad news come suddenly
D
Did the bad news come so suddenly
Only when ______ in 1918, ______ happily back to work.
#83393
A
the war was over … he went
B
was the war over … did he go
C
the war was over … did he go
D
was the war over … he went
________ who had arrested him three times for carrying drugs.
#79785
A
Before George stood the policeman
B
Before George the policeman stood
C
Before the policeman stood George
D
Before George did the policeman stand