He used to ______ cards, but now he is used to _______ a walk after supper.
. Deer____ mainly on grass.
. Why didn’t you come? Haven’t you __________?
This dictionary is _____ to my reading, but that one is __________.
. We can hope ___ the best but we must prepare ____ the worst at the same time.
.Professor White has received a letter ___ to give a lecture in Peking University.