If only I _____ how to operate a computer as you do!
A. had known
B. would know
C. should know
D. knew
A. had known
B. would know
C. should know
D. knew
【答案】
A. had known
B. would know
C. should know
D. knew
A. had known
B. would know
C. should know
D. knew
【答案】
发表评论 取消回复