问题
There is no doubt__________since he is always a punctual person.
A:whether he will finish the work on time
B:if he will finish the work on time
C:that he will finish the work on time
D:how he will finish the work on time
B:if he will finish the work on time
C:that he will finish the work on time
D:how he will finish the work on time
正确答案是：
