1.
根据下列句子及所给汉语注释或通过上下文，在答题卡标有题号的横线上，写出空缺处各单词的正确形式。每空只写一词。
38．Everyone should____________（行动）now to separate rubbish into different groups.
39．Mr. Wu said he had _____________（很少）seen a child with so much talent.
40．He went_____________（野营) with us and taught us how to put up a tent.
41．He seems to have a ______________（第六）sense for knowing that his brother will win.
42．Miss Zhang ____________（订购）a dress online two weeks ago, but it hasn't arrived yet.
43．Amy and Annie will go on a natural history walk next ______________（星期日）.
44．Before you start writing a story, think about the __________（人物）and what they do.
45．- Tickets for today?
- Sorry, we've got __________ left, but we have a few for tomorrow.
46．- Have you ever been to the Summer Palace?
- Yes. I have visited it many times _____________ 2009.
47．- I hear your grandpa has got an eye problem. Is it serious?
- Yes. He can't see anything now. He has gone _______________.