【请教大家几道英语语法题,谢谢了!1.ifyouwant＿.youhavetogetthefundsomewhereA.thatthejobisdoneB.thejobdoneCtohavedonethejobDthejobthatisdone2.itlooks＿youaremadeaseriousmistakeA.asBifCtho】

　　请教大家几道英语语法题,谢谢了!

　　1.ifyouwant＿.youhavetogetthefundsomewhere

　　A.thatthejobisdoneB.thejobdone

　　CtohavedonethejobDthejobthatisdone

　　2.itlooks＿youaremadeaseriousmistake

　　A.asBifCthoughDasthough

　　这个我选了A麻烦帮我讲讲这几个的区别

　　3.wehavedonethingsweoughtnottohavedoneand＿undonethingsweoughttohavedone

　　AleavingBwillleaveCleftDleave

　　4.theradiooftheworkdonebythemachine＿theworkdoneonitiscalledtheefficiencyofthemachine

　　AagainstBwithCtoDfor

　　我语法不太好,希望讲详细点,谢过!