The loss has not yet been _____accurately, but it is believed to be well beyond a hundred million dollars. [ ]

It’s a fact ____ he hasnot received the letter

Students can easily fall behind in theirstudies ____ they don’t manage their spare time carefully.

Another cup of tea —No, thanks． I________leave now． Lucy is waiting for me．

He ___ his leg when he __ in a football match against another school