I should have known better是虚拟语气还是过去将来完成时?

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• S1：______you______basketball with friends this month?S2:No,I________.I_______ _______basketball with friends on 24.Feb.是填did（过去式）,还是have/has been(现在完成时),如果用现在完成时的话,应该加yet吧,如果用过去式的话又不太恰当,而且我们现在在教现在完成时.回答时,能把句子重新抄一遍.
• 初三英语的动词填空下面这些是不懂的1、Oh,you have come ,I thought you ___(not come )yet.I was looking up your photo number.2、To our surprise,he passed the exam.We thought he ___(not pass)the exam this time.这两句前一句是用过去完成时,第2句用的wouldn't pass,为什么?这两句的thought的意思不一样么?为什么第2句会用将来时?ps:讲的越简单越好,少举一点例子,最好简单点,难了听不懂.
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