-I’msorrytokeepyouwaiting．-Oh，notatall．I

問題詳情：

-I’m sorry to keep you waiting．

-Oh，not at all．I_______ here for only a few minutes．

A．was           B．will            C．have been              D．am

【回答】

C

知識點：動詞時態

題型：選擇題