【小题1】Listen! The radio says something badhappened (happen) last night.
【小题2】He spent as much time as he couldstudying (study) different subjects.
【小题3】The teacher told us that light travels (travel ) much faster than sound.
【小题4】I won’t be able to take part in the party if I am not (not be) free.
【小题5】There aren’t going to be (not be) a lot of changes in the next 24 hours, are there?
【小题6】They are good friends They often sit on the playground,talking (talk) about their future plans.
【小题7】Luckily, he caught ( catch) the first bus and wasn’t late for school.
【小题8】The elderly like to keep pets to make (make) their life better.
【小题9】Dad said to Mike,I hope youwon’t forget (not forget) to write to me soon.”
【小题10】The plane has arrived ( arrive). You can see your mother at once.
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解析：
【小题1】句意是：听收音机说昨晚发生了不好的事。填过去分词happened。
【小题2】句意是：他花了尽可能多的时间学习不同的科目。Spend time doing sth “花时间做…”所以填studying。
【小题3】句意是：老师告诉我们光比声音速度快，虽然主句是一般过去时，但因为从句是客观真理，所以travel用一般现在时travels。
【小题4】句意是：如果我有空，我就能参加聚会了。注意：if条件句应该用一般现在时代替一般将来时用am not。
【小题5】句意是：接下来的20个小时不会有很多变化。应该用将来时，又因为反意问句用的是are there，所以用aren’t going to be。
【小题6】句意是：他们是好朋友，经常坐在草地上谈论未来的计划。用talking做伴随状语。
【小题7】句意是：幸运的是,他赶上了第一班车，不会迟到了。“赶上”用caught。
【小题8】句意是：老人喜欢养宠物为了使生活更好。用to make表示目的。
【小题9】句意是：爸爸对迈克说：我希望你不会忘了很快写信给我。用将来时won’t forget
【小题10】句意是：飞机已经到了，你很快就看到妈妈。用现在完成时has arrived。