The teacher always reads a story for the children ______ a day .

I _______ have met him a long time ago. Both his name and face are very familiar.

.Within a moment, its body _______ swiftly by the killer down into the depths of the sea

Next Monday is my birthday.—Is that so ______

I took mathematics and physics because I think that ________ very important for me to make further research in this field.