英语三道选择题,帮忙解答~~1.My dictionary_____ I have looked for it everywhere but still____itA has lost don't find B is missing don't findC has lost haven't found D is missing haven't found2.Great changes have_____

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英语三道选择题,帮忙解答~~1.My dictionary_____ I have looked for it everywhere but still____itA has lost don't find B is missing don't findC has lost haven't found D is missing haven't found2.Great changes have_____
英语三道选择题,帮忙解答~~
1.My dictionary_____ I have looked for it everywhere but still____it
A has lost don't find B is missing don't find
C has lost haven't found D is missing haven't found
2.Great changes have_____in my hometown these years
A happened B taken place C broke out D happened to
3.It's____to plant trees in April
A best B the best C had better D the better
选什么?希望能解释原因,谢谢了,越详细越好~~~~

英语三道选择题,帮忙解答~~1.My dictionary_____ I have looked for it everywhere but still____itA has lost don't find B is missing don't findC has lost haven't found D is missing haven't found2.Great changes have_____
D 必须是have been lost ;还没有找到是完成时
B 词义辨析
B 搭配