问题
选择题
He ______ the test again, in which case, his mother will be very disappointed.
A．might fail
B．must have failed
C．should fail
D．could have failed
答案
答案：A
根据下文的 will be 可知，“他考试再不及格”是将来的事，据此可排除B和D。再根据语意，排除C。