We want students for the school show. If you _________ play the guitar, please talk to Mr. Zhang after school.
A：can
B：may
C：should
D：must
____ ____Mr Brown____to London?
下列划线字音完全正确的一项是（ ）
某人收到一个学术讨论会的通知，但他因病不能出席，写信向大会秘书处说明，措辞最得体的一项是 ( )
