题干
—Who's singing in the park?
—It ________ be Ann. Ann is much taller.
A：must
B：can't
C：need
D：can
答案(点此获取答案解析）
B
—Who's singing in the park?
—It ________ be Ann. Ann is much taller.
A：must
B：can't
C：need
D：can
