① He took whatever action he thought necessary.

= He took any action that he thought necessary.

② Whoever comes will be welcome.

= Anyone who comes will be welcome.

③ The new store gave a present to whoever visited it on its opening day.

= The new store gave a present to anyone who visited it on its opening day.

④ I’ll sell it to whomever you recommend to me.

= I’ll sell it to anyone whom you recommend to me.

⑤ He told the story to whoever would listen.

= He told the story to anyone who would listen.

⑥ He told the story to whomever he met.

= He told the story to anyone whom he met.

⑦ In a trying situation you can also look for whatever element of humour may be present. The ability to laugh things off has saved many an awkward situation in the classroom and social life.

= In a trying situation you can also look for any element of humour that may be present.

⑧ You will find him home whenever you call on him.

= You will find him home, no matter when you may call on him.

⑨ Whosever it was, it is now mine.

= No matter whose it was, it is now mine.