Sarah says that she will visit us in the summer but I can’t ______ her ______ to

游客2024-10-29  2

问题 Sarah says that she will visit us in the summer but I can’t ______ her ______ to a definite date.

选项 A、nail... down
B、tie... up
C、pin... on
D、fasten... in

答案 A

解析 nail down的意思是“准确解释,确切说明”,符合本题的题意。整个句子的意思是:“萨拉说今年夏天来看我们,但是我还不知道她来的确切日期。”其他三个选项均不适合本题的题意:tie up 意为“系紧;捆绑”;pin on意为“把……归咎于”;fasten in意为“收紧;锁上”。
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