问题
选择题
–What time were you supposed _______?
–At six o’clock. But I arrived at six thirty.
A．arrive
B．arrived
C．arriving
D．to arrive
答案
答案：D
考查非谓语动词。句意：你打算什么时候到达？ be supposed to do sth，表示应该做某事，不定式表示具体的将要进行的动作，故选D