Mark the letter A, B, C or D to indicate the correct word or phrase to complete each of the sentences

Mark the letter A, B, C or D to indicate the correct word or phrase to complete each of the sentences
16. When I visit the company__________ I used to work, I become very emotional.
A. where.     B. whose.      C. who.      D. which
 
17. When my mother_________ home, the house ______into.
A. had gone/broke.                B. went/had broken
C. had gone/ was broken.    D. went/had been broken
 
18. People tend_______that the problem will never affect them.
A. thinking.     B. to think.      C. think.     D. to thinking
 
19. When he was young, he was crazy________ space.
A. for.       B. of.         C. about.           D. with
 
20. It took her a long time to____________ the shock of her mother's death.
A. go off.        B. get over.      C. take on.   D. put overline off