问题
选择题
—There aren’t any toys in our suitcase．Where have you put them?
—Oh, no．That old lady sitting next to us ______ have taken ours by mistake.
A．must
B．could
C．should
D．would
答案
答案：A
情态动词用法题。Must用于肯定句中表猜测，我们的行李箱中没有玩具你把它们放哪了？哦，天哪，坐在我们旁边的老太太肯定错拿了我们的玩具。