有關文法的問題

1 More than one [questions] (are) asked

2 None of the answers (is / are) right {{both 'is' and 'are' are acceptable}}

3 Some of the money (has) been returned to the owner, but the rest (has) still not been found.

4 Please tell the crew that (they) can come on board now and that ( they ) can start work at once.

5 The audience (were) standing on (their) (chairs)and shouting at the top of (their voices).

REF: Dictionary + My knowledge