How many tablets at most can a person over 12 have in 24 hours

A．People have done. nothing to get rid of the tsetse flies.
B．People are trying to find out ways to get rid of the tsetse flies.
C．No ways can be found to get rid of the tsetse flies.
D．It won't be long before people get rid of all the tsetse flies in Africa.

A．Stop taking the medicine at bedtime.
B．Continue to take the normal amount.
C．Take more than the normal amount.
D．Take less than the normal amount.