She tried to_______laughing，but it didn’t work;the performer gave her an angry look at her.

A.prevent                            B.stop from                  C.stop                    D.keep

She tried to_______laughing，but it didn’t work;the performer gave her an angry look at her.

1. A.
   prevent
2. B.
   stop from
3. C.
   stop
4. D.
   keep