填空题

With better equipment, we (do) ______ it better.

【参考答案】

could have done
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单项选择题
A．I have gone to Beijing.B．Once a week.C．I like visiting Beijing.D．Three times.
A．I have gone to Beijing.
B．Once a week.
C．I like visiting Beijing.
D．Three times.
填空题
We regret (tell) ______ you that the materials you ordered were out of stock.
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