Ⅰ.单词拼写
1.Mrs Green is a ________(家庭主妇),doing all the housework.
答案:housewife
2.We should ________(保卫) ourself against attack.
答案:defend
3.I can't ________(专注于) on my lessons with the noise going on.
答案:concentrate
4.What he said was ________(可疑的).
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