You must read the _______ with great care to see if the drug contains PPA before it is taken.

lled to tell his mother that he couldn’t enterthe house, for he ________ his key at school.

The students each _______________their own e-mail address.

Only those who follow their dreams ____achieve the final success．

ery tired, helping with theclothes.—-Why not take a rest,then—– ________.