－Any information about your son?
－No，if only I ______ those tough words to him．
| A．didn’t say | B．hadn’t said |
| C．shouldn’t have said | D．couldn’t have said |
The man _______ came to see you is my brother.
| A．who | B．whose |
| C．which | D．where |
English is a language shared by several diverse cultures, _________ uses it differently.
| A．all of which | B．each of which |
| C．all of them | D．each of them |
I don’t become a serious climber until the fifth grade, ______ I went up to rescue a kite that was stuck in the branches of a tree.
| A．when | B．where |
| C．which | D．why |
A company ______profits from home markets are declining may seek opportunities abroad.
| A．which | B．whose |
| C．who | D．why |
I have no idea go there with her.
| A．it is why that he will |
| B．why is it that he will |
| C．why it is that he will |
| D．it is why will he that |