HE LAUGHED IN A VERY STRANGE WAY, _________ EVERYONE TO TURN ROUND...

9. - DE O THI DAI HOC VA DAP AN THAM KHAO
DE O THI DAI HOC VA DAP AN THAM KHAO

9. He laughed in a very strange way, _________ everyone to turn round and look.

A. causing B. making C. allowing D. attracting