___________ is known to everybody, the noon travels around the earth once every month.

They always have a good time ＿＿＿＿ each other.

I should very much like to have gone to that party of theirs, but ＿＿＿＿＿

It was __________ computer games that cost the young man a lot of precious time that he ought __________ on his lessons．

ys, Internet shopping will really_____when people are sure that it is safe.