People think “SOS” is the simplest and common to make, in time of danger or disaster.
| A.mark | B.sign | C.signal | D.remark | 
Both the concerts will be broadcast _______ at the same time.
| A.live | 
| B.alive | 
| C.living | 
| D.lively | 
He made a speech at the conference, _______folk music.
| A.hearing from | 
| B.thinking of | 
| C.carrying on | 
| D.dealing with | 
I'm going to get _______ this afternoon.
| A.these letters mailing | 
| B.mail the letters | 
| C.to mail these letters | 
| D.him to mail the letters | 
I told them not everybody could run as fast as you did, ______ ?(2011重庆卷28)
| A.could he | 
| B.didn't I | 
| C.didn't you | 
| D.could they | 
Our teachers always tell us to believe in ________ we do and who we are if we want to succeed. (2011四川卷10)
| A.why | 
| B.how | 
| C.what | 
| D.which |