It was time for class. Mr. King asked all the children __________ down quietly.
A:sit
B:sat
C:to sit
D:sitting
如果你想要蔬菜和鸡蛋时,你会说:“ ”
司机王叔叔从厦门出发到福州送货,速度是60千米/时,行驶了5小时。王叔叔一共行驶多少千米?