问题：
【题文】Lucy’s colour ________blue because she likes to be the leader, so it __________red.
A．can’t be, must be
B．can’t be, mustn’t be
C．should be , must be
D．must be, can’t be
【题文】Lucy’s colour ________blue because she likes to be the leader, so it __________red.
| A．can’t be, must be | B．can’t be, mustn’t be |
| C．should be , must be | D．must be, can’t be |
参考答案：