409.Everyone was on time for the meeting,_____Chris,who's usually ten minutes late for everything.

A.but

B.only

C.even

D.yet

410.Most people on this island are recreational fishers,and _______,fishing forms an actual part of their leisure time.

A.accidentally

B.purposefully

C.obviously

D.formally

409.答案是C;

根据句意判断，选C。

410.答案是C;

accidentally 偶然地；purposefully 有意图地，有意义地；obvously 显而易见地；formally 正式地。句意:在这个岛上，大多数人是消遣的钓鱼人，显然，钓鱼占据了大部分闲暇时间。