_____in the sports world，a sportsman needs to train constantly to keep himself in best condition．
| A．Survive | B．Surviving | C．To survive | D．Survived |
The farmer was very thankful to the doctor ______ treated his son.
| A．what | B．which | C．who | D．whose |
________ he was very ill, he still went on working..
| A．Because | B．For | C．Though | D．/ |
Kentucky is the state _________ Lincoln was born in.
| A．when | B．where | C．-who | D．which |
We bought Granny a present,_______ she didn' t like it.
| A．but | B．and | C．or | D．so |
Could you tell me _________?
| A．how old is your son | B．that he will come here soon. |
| C．whether is it fine tomorrow. | D．who is going to speak at the meeting |