单项选择题
According to the newsman，as a result of（）heavy fog，（）expressway has been closed up until further notice.
A.a；theB.the；不填C.不填；anD.the；the
单项选择题 What the teacher said in class set all the（）a lot.
单项选择题 John（）his father about his failure in the exam．
单项选择题 We（）finish it ahead of time, though it was such a tough task．
