三道关于非谓语和虚拟语气的题.英语1.Why hasn‘t he come?_____on time,we would have to put off the trip.A.if he doesn't comeB.if he won't comeC.if he shouldn't comeD.if he hadn't come2.The studens will have more discussions like this in the weeks ______.A.coming B.to come C.come D.to be coming 3.________ halfway through the exercise,the teacher changed his mind and collected all our papers.A.When only beingB.When we were onlyC.Being onlyD.Having been能不能说下答案并告诉我其他选项错在哪,或

三道关于非谓语和虚拟语气的题.英语
1.Why hasn‘t he come?_____on time,we would have to put off the trip.
A.if he doesn't come
B.if he won't come
C.if he shouldn't come
D.if he hadn't come
2.The studens will have more discussions like this in the weeks ______.
A.coming B.to come C.come D.to be coming
3.________ halfway through the exercise,the teacher changed his mind and collected all our papers.
A.When only being
B.When we were only
C.Being only
D.Having been
能不能说下答案并告诉我其他选项错在哪,或用了什么语法搭配.