--Icalledyouthismorning,butnobodyansweredit.           ...

問題詳情：

--I called you this morning, but nobody answered it.

               ---Sorry. I ________ the flowers at that time.

A. watered         B. was watering     C. water   D. have watered

【回答】

B

知識點：動詞時態

題型：選擇題