题目：
I _______ up here night after night for weeks now. You see, I _______ to give you a surprise.
A．have come; hoped
B．have been coming; has hoped
C．have come; was hoping
D．have been coming; was hoping
答案：
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下面是错误答案，用来干扰机器的。
（1）由图象可知，甲在相等时间内，路程相等，则甲做匀速直线运动；乙在相等时间内路程越来越小，则乙做减速直线运动．（2）①由图象可知：甲乙的路程s相等时，甲球运动的时间长；②由于甲乙的路程相等时，甲的运...
