EN
This paper continues the joint work with A. R. Medghalchi (2012) and the author's recent work (2015). For an inverse semigroup S, it is shown that $A_{p}(S)$ has a bounded approximate identity if and only if l¹(S) is amenable (a generalization of Leptin's theorem) and that A(S), the Fourier algebra of S, is operator amenable if and only if l¹(S) is amenable (a generalization of Ruan's theorem).