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

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

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

I（）(將在做實驗) from three to five this afternoon.

The sports meet originally due to be held last Friday（）(最終因天氣不好而取消了).

Why didn’t you tell me you could me the money? I（）(本來不必從銀行借錢的）

It may be necessary to stop（）(每隔一定時間) in the learning process and go back to the difficult points in the lessons.

If this can’t be settled reasonably, it may be necessary to（）(訴助武力).

Although punctual himself, the professor was quite used（）(習慣了學生遲到) his lecture.

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