Hismotherbecomesdisappointedwheneverhefailstoliveuptoher________(expect)

Forthoseinvolved,thescandalhasbeenavery________(pain)experience

Thetheoryofblackholesinspace__(accept)bymanyseriousscientistsandastronomers.

Somestudentsfromaskingquestionsinclass.（）

Everyboyandgirl___(treat)inthesameway.