III,选择合适的词并用其适当形式完成句子2

III,选择合适的词并用其适当形式完成句子2history ; historical ,historic(1)After a long time's discussion,the two great leaders signed a ____ treaty.(2)Mr Liu is our ____ teacher,who is good at studying ____ research.3,occur; happen,take place(1) A terrible fire _____ at that hotel last night.(2)Great changes have_____ in our homedown since 2008.(3) Something must______ to John,because he hasn't turned up.