Generally speaking, according to the directions, _____ the drug has no side effect.
#83822
A
when taken
B
when taking
C
when to take
D
when to be taken
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—Who should be responsible for the accident?—The boss, not the workers. They just carry the orders _______.
#79513
A
as told
B
as are told
C
as telling
D
as they told
Not until _________ did man accept that fact that all living things must die.
#84066
A
did many years pass
B
many years past
C
many years had passed
D
many years have passed