1.---you are very busy,---a line if you are in town

1.___you are very busy,___a line if you are in town
A.if;write
B.even though;write
C.if;drop
D.even through;drop
2.if you anything___about it,you should tell us
A.after all
B.all in all
C.at all
D.first of all
补充：if you know anything...（2的答案不是B，）