I wasn’t blaming anyone: I ________ said errors like this could be avoided.

Time is pressing．You cannot start your task _____ soon．

If they don’t change the way they’re working on the issue, the result will       turn out to be just the opposite of their wish.

I heard the alarm ringing all the morning. ____ something very urgent happened.

As is known to all language learners, the newly learnt words will soon be forgotten unless______ used in everyday communication.