两道超级简单但我不太清楚的英语选择题

两道超级简单但我不太清楚的英语选择题
1.John,you clean the classroom after school today,will you?
____But it is Bruce's turn to be on duty today.
A.Pardon?
B.Why not?
C.I can't agree more
D.Are you kidding?
2.Though there have been no visitors from____outer space,scientists believe in the existence of other intelligent life in ____universe.
A./;the
B.the;/
C.the;the
D./;/