问题
选择题
I was supposed to _______ all my shopping by now, but I still have a great many to buy.
A．to have finished
B．to finish
C．to be finishing
D．to have been finished
答案
答案：A
考查非谓语动词。到如今我本应该已经买了我所有的东西，但是我仍旧有很多东西要买。Be supposed to被期望，后面接动词原形，如果不定式动作发生在谓语动词前，则用不定式的完成时态，故选A。答案中去掉一个to更为恰当。