Aperson ______ e-mail account is full won’t be able to send or receive anye-mails

It is difficult for us to learn a lesson in life_________we’ve actually had that lesson

He often practices English chattingwith his pen pal in Australia.

_____when has the country been open to international trade? — 1978, I suppose[ ]

His parents don’t want him to be the of the family, but just a healthy and happy person.