Once a man wanted to go            one side of a river  to          in a boat.  He     take       him a sheep,a wolf and a basket of vagetables. But he could take only of them           ,because the boat was very       ."If I         the wolf and the  sheep together,the wolf may eat the sheep,"he said to     "If I leave the sheep and the vagetables together ,the sheep   may eat the vagetables ."He thought and thought .At last,he  had an idea.And he     able to get to the other side of the  river with the sheep,the wolf ,and the vagetables .Do you know       ?
A. on         B. from            C. with
A. another     B. the other          C. other
A. had to      B. has to            C. must
A. after       B. with             C. about
A. once a time  B. in time            C. at a time
A. big         B. small            C. beautiful
A. will leave  B. left             C. leave
A. oneself      B. myself           C. himself
A. was         B. is               C. can
A. how did he it  B. how did he do itC. how he did it