题文
—Whose textbook is this, Tony?
—Look! Ann's name is on it! It be hers.
| A．can't | B．must | C．may | D．mustn't |
—Whose textbook is this, Tony?
—Look! Ann's name is on it! It be hers.
| A．can't | B．must | C．may | D．mustn't |
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