When I （）(發(fā)現(xiàn)他騙我) I stopped buying thins there and started dealing with another shop.

He wears a pair of sunglasses（）（惟恐被別人認出來）.

The room is in a terrible mess; it （）（肯定沒打掃過）.

Mark often（）(試圖逃脫罰款) whenever he breaks traffic regulations.

Most doctors recognize that medicine is as much（）(是一門科學，也是一門藝術(shù)).

Everybody knows he（）（受到了冤枉指控）.

（）(我們沒有人料到主席會出現(xiàn)) at the party. We thought he was still in hospital.

The ship’s generator broke down and the pumps（）(不得不用手工操作) instead of mechanically.

It’s time（）(采取措施) about the traffic problem downtown.

（）(正是由于她太沒有經(jīng)驗) that she does not know how to deal with the situation.