She is too slow. She pass the test, but she too little.
A. would; knew
B. will; knows
C. would; knows
D. will; knew
网友回答
A. would; knew
B. will; knows
(答案→)C. would; knows
D. will; knew
解析：shouldn’t have e意为“本不应该来” ，暗含 “她来过了” 的意思，与题意不符；needn’t have to e中need为情态动词，倾向于主观上的“必要”，与题中给出条件“We had changed our plan”不符；didn’t need to e中的need to do表示“(有责任、有义务)做某事”，符合题意。