He was suddenly ________ with a strange illness when he was about to finish his work.
It wasn't until nearly a month later __________ I received the manager's reply.
It was __________ he came back from school today __________ he found his new book missing.
It was only when I reread his poem recently __________ to appreciate its beauty.
__________ you met the foreigner from Canada?
It was in the office __________ my sister works __________ I met the new manager.