Tom, Jack and Rose were named as assistant professors. Believe it or not, ______ three of them were of ______ age.
She always buys me a nice present _________ she comes to see me .
Only after Mary read her composition the second time _________ the spelling mistake.
______ being fun and good exercise ,swimming is a very useful skill.
Come and see me whenever ____.
It is strange that he _________ in such an important examination .