请选择DCBA;~2_6H.|7i0D'J8K:w+T4f.|-sThe doctor doesn't feel well today, ______ he still works very hard.1W7{;Y4B3B+g2n)L4J2h3h:K
A.but1W7{;Y4B3B+g2n)L4J2h3h:K
B.and1W7{;Y4B3B+g2n)L4J2h3h:K
C.so1W7{;Y4B3B+g2n)L4J2h3h:K
D.or1W7{;Y4B3B+g2n)L4J2h3h:K