Patience is an important ____ of a happy and rewarding life. After all, some things are worth waiting for. 

A. lesson    B. experience   C. purpose   D. quality

Patience, without ________ you can't do the work well, is a kind  of quality.

A．that 

B．it

C．which 

D．what

Patience is of great importance in our daily life. Once I waited a bus to come at a stop. 30 minutes past, but no bus came. Both upset and annoyed, I decided to walk on feet. But no sooner had I left when the bus arrived. I thought if I had waited for one more minute, I would have caught it. If I chose to take a next bus, I would have to wait for other 30 minutes. Only then do I realized my problem. Being impatient will possible waste all the effort that we have put it in. now whenever I am close to lose my patience, I’ll think of this experience.

Patience, without ____ you can’t do the work well，is a kind of quality.

A. that   B .it    C. which   D. what

Patience is a kind of quality — and that is ___A___ it takes to do anything well.

A. what　　　　　　　　　　 B. which

C. which　　　　　　　　　　 D. how