Question

—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

Answer 1

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。