4Q5`)` She was just about to explain _________ she hadn’t passed her maths test chiefly out of carelessness _________ her uncle came.:r-s0C*U2F8w1v
A.her mother;when:r-s0C*U2F8w1v
B.to her mother why;that:r-s0C*U2F8w1v
C.her mother that;when:r-s0C*U2F8w1v
D.to her mother that;when:r-s0C*U2F8w1v