问题
选择题
| Whatever is left over may be put into the refrigerator, _____ it will keep for two or three weeks. |
| A. when B. which C. where D. while |
答案
答案：C
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| Whatever is left over may be put into the refrigerator, _____ it will keep for two or three weeks. |
| A. when B. which C. where D. while |
答案：C