Directions: Choose the best answer to complete the sentences.

【小题1】He is a(n) _____ boy, but he is very unsure of himself.
【小题2】There is a little window in the _____ case so that you can see the tape.
【小题3】It is _____ that he should fall in love with such a beautiful girl.
【小题4】This _____ is now on a firm footing and should soon get profits.
【小题5】Betty believed yoga was a very _____ exercise.