【单选题】In addition to advising the school newspaper staff, Mr. Mathison also regularly ______ the junior class regarding community service opportunities.
【简答题】完形填空,选择正确答案。 The traffic lights are the 1___________ in every country. There are always 2___________ lights: red, yellow and 3___________. Red means ' 4___________'. Yellow means ' Wait ', and green m...