This book _____ ten units, ______ three mainly revision.
.—Do you know this city? —No, this is the first time that I ______ here.
.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.