was / is happy

Can I say,

(a) She is happy because she got a bag.

She is happy because her mother gave / gives her a bag.

(b) She was happy, because she has / got a bag.

(c) She felt happy because she got a bag for her present.

(d) She is happy when she saw /sees her bag.

She is happy to get a bag.

She is happy with her bag.

She is happy because she bought a bag.