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

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

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

I have had great deal of trouble（）.(跟得上班上的其他同學(xué))

We’d like （）(預(yù)訂一張餐桌) five for dinner this evening.

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

Some women （）(本來能夠掙一份很好的工資) in a job instead of staying home, but they decided not to work for the sale of the family.

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

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

Although punctual himself, the professor was quite used（）(習(xí)慣了學(xué)生遲到) his lecture.