（）(信不信由你), his discovery has created a stir in scientific circles.

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

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.

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

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

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

Buying clothes（）(是一件很耗時的工作), because those clothes that a person likes are rarely the ones that fit him or her.

The price of beer（）(從50美分到4美元不等) per liter during the summer season.

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

His remarks left me （）(想知道他的真實(shí)目的).