___working on his composition the day before,he would have finished it by now.
A.Would he start
B.Had he started
C.If he is to start
D.If he was starting
正确答案是B
___working on his composition the day before,he would have finished it by now.
A.Would he start
B.Had he started
C.If he is to start
D.If he was starting
正确答案是B