I don’t know whether he is still （ ） in collecting coins. He used to be, but that was several years ago.

We arranged to meet at the station but she did not （ ）.

I love thinking of new designs. It keeps my mind clear and active and fills my retired life with （ ）.

Proper_____can ease people’s relationship and make their conversation more pleasant.

_____ dictionary is enough for me.

Today Bob was late again for class because he overslept(睡过头), but he （ ） an excuse of being ill.

（ ） when she started complaining.

The engineer （ ） my father works is about 50 years old.

I, _____ your good friend, will try my best to help you out.

He studies so hard to avoid （ ） at the bottom of the class.

I have bought _____ useful reference books _____ I don’t know which one to start with.

In his opinion, success in life mainly （ ） on how we get along with other people.