The number 5.12 is a special number, ______I think, that will be remembered by the Chinese forever.
The man ___ my mother talked just now is a friend of mine.
It was very cold, so we __ the fire__ all the time/
Won’t you have ___ more rice?
Last night I met Mr. White , ___ used to be my maths teacher.
World war I ___in 1937.