We regret __________you that your application has not been successful.
A. to inform           B. to informing             C. informing                D. inform 

I fancy __________ which makes my body so flexible.
A. to dance              B. dance             C. dancing            D. to have been danced 

 What about __________ to the zoo this weekend?
A. going           B. to go               C. gone                D. having gone

When I felt sad after breaking up with my boyfriend, I was advised __________ out with my friends.
A. to hang                  B. hanging                C. to be hanging                  D. hang 

 I hesitate __________ a decision because it’s hard __________.
A. making/choosing  B. to make/to choose  C. make/choose  D. made/choosing