选词填空．

(1)She ________ have achieved greater progress, if you had given her more chances．

(2)－What has happened to George?

－I don’t know．He ________ have got lost．

(3)You ________ have been mad to play football in such a heavy rain．

(4)Tom, you are too lazy．The work ________ have been finished yesterday．

(5)Mary ________ have stolen your money．She had gone home．

(6)There is nowhere to find them．Where ________ they have gone?