Question

grandfather worked very hard,       he couldn’t support the big family

1. A.
   Though, but
2. B.
   /, and
3. C.
   Though, and
4. D.
   Though, /

Answer 1

D
连词辨析。Though虽然，尽管；but但是；and和，并且。句意：虽然我的爷爷工作非常努力，但是他也不能维持这个家庭。Though本身即可表示虽然但是的含义，故选D。