19.—My cat’s really fat. —You ______ have given her so much food.
. My brother is fifteen, but he talked as if he ________ the Long March.
. Lily _____ her parents has gone to Australia for the holiday.
. He tried to be ______, but his trembling hands gave him away.
. He's smart enough to know that if he________that crowd, he's to be punished by his father sooner or later.
. The old couple were not used to _____ in the noisy city.