用括号内所给动词的适当形式填空。
【小题1】In the past three years, my home town has changed (change) a lot. already.
【小题2】It’s hard to say what will happen (happen) in 100 years in our country.
【小题3】Theyaren’t going to travel (not travel)to Shanghai next week, are they?
【小题4】The studentswere chatting (chat) from 6 to7 yesterday evening.
【小题5】When I got to the station yesterday morning, my friends were waiting (wait ) for me at the entrance.
【小题6】If itdoesn’t rain (not rain) tomorrow, we’ll go hiking.
【小题7】Hehasn’t written (not write) a letter to his mother yet. He has to do that soon. His mother misses him very much.
【小题8】Would you pleasenot make (not make) such a big noise. The baby is sleeping.
【小题9】It’s a long time since we met (meet) last time, isn’t it?
【小题10】----How many times has---forgotten the girl practicing (forget) to take the keys to her home?
----At least three times.
【小题11】You must spend as much time as you can have lived (practise) playing the piano.
【小题12】They (live) in Wuxi since they were born.
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解析：
【小题1】考查时态。In the past three years“在过去的三年里”，in加一段时间，与现在完成时连用。故填has changed。
【小题2】考查时态。in 100 years“100年后”，in加一段时间，与现在完成时连用。故填will happen。
【小题3】考查时态和反意疑问句。根据are they可知，主句是否定，且用be going to表示将来。故填aren’t going to travel。
【小题4】考查时态。from 6 to7 yesterday evening“昨晚6-7点”，过去某时间点正在发生的事情，用过去进行时。故填were chatting。
【小题5】考查时态。过去某时间点正在发生的事情，用过去进行时。故填were waiting。
【小题6】考查if条件句。if“如果”，引导条件句，用现在时代替将来时。故填doesn’t rain。
【小题7】考查时态。根据yet可知，应该用现在完成时的否定。故填hasn’t written。
【小题8】考查固定句型。Please后加动词原形，否定在please后加not。故填not make。
【小题9】考查时态。since从句用一般过去时。故填met。
【小题10】考查固定句型。It is+数词+times+含有现在完成时的that从句，“第几次做某事”。故填has---forgotten。
【小题11】考查固定搭配。spend time doing sth“花时间做某事”，as much time as you can “尽可能多的时间”。故填practicing。
【小题12】考查时态。since从句常与现在完成时连用。故填have lived。