Q. Change the speech:
"Have you done this sort of work before?" said his new employer

• (A) His new employer asked him whether he has done that sort of work before.
• (B) His new employer asked him whether he has done this sort of work before.
• (C) His new employer asked him whether he had done that sort of work before.
• (D) His new employer asked him whether he had done this sort of work before.