Find the one mistake (A, B, C or D) in these sentences and then correct them

A. Would

B. to have

C. and

D. later

A. once again

B. of

C. of

D. a sea

A. to have taken

B. but

C. didn’t have

D. too much

A. in

B. too

C. already

D. so

A. to have gone

B. to the barbecue

C. but

D. possible