Don'tbetoohardonhim.Afterall,itwasforthefirsttime______...

問題詳情：

Don't be too hard on him. After all, it was for the first time _________ he made such a mistake.

A．that           B．when              C．since        D．before

【回答】

A

知識點：倒裝與省略

題型：選擇題