【推荐1】---My son is addicted to computer games. He is hopeless，isn't he？
---Yes，_____________he is determined to give up and start all over.

A．if	B．unless
C．though	D．so

【推荐2】Everyone in the tourist industry has made the point that __________ Government assistance is helpful, what they actually need most is for the visitors themselves to return.

A．as

B．when

C．while

D．since

【推荐3】Looking back upon my teaching career, I don’t remember ever having been doubted, or challenged in class, ________ rejected.

A．other than	B．let alone
C．rather than	D．more than