Not until they left school________ how much their teachers loved them and helped them.
—Will Thursday or Friday __________ you? —Either will __________
Experiments of this kind __________ in both the U. S. and Europe well before the Second World War.
It's no use __________ without taking action.
Even the best writers sometimes find themselves __________ for words.
I am afraid he's more of a talker than a doer, which is __________ he never finishes anything.