1.（2014安徽）_______ the exam, we'll say good-bye to our dear teachers, classmates as well as our beautiful school.
A. In B. For C. After D. Through
C 解題思路：介詞的用法。理解題意後，此處應填“在…之後”，選擇after，A意為在…中，B意為對於…，C意為通過…，均不符合題意。難度★
2.（2019武漢）He wrote his phone number__a piece of paper.
A. on B. for C. in D. from
答案：A
解析：句意：他把他的電話號碼卸載了一張紙上，在...上使用介詞on。
3. （2014北京）I sometimes help my mom with her housework____________ Saturdays.
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