Hismotherbecomesdisappointedwheneverhefailstoliveuptoher________(expect)

The theory of black holes in space__ (accept) by many serious scientists and astronomers.

Somestudentsfromaskingquestionsinclass.（）

If you had been in better health, we___ (allow) you to join them in the work.

Althoughtheyagreethatlifeisimportantandshouldberespected,theyfeelthatthequalityoflifeshouldnot__(ignore).