We were there ___ four o'clock 填介词 at ,on 或 in

问题描述:

We were there ___ four o'clock 填介词 at ,on 或 in

at four o'clock 固定用法。。在四点。 at+时间点。in+不特指的一天 on+特制的一天、如 on Thursday on a rainy day

at
在整点用
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at
在几点钟一律使用介词at .

at