The noise of something next door early every morning made me unable to fall into sleep.
She was just about to explain ___ she hadn't passed her maths test chiefly out of carelessness ___ her uncle came.
--Shall we meet right now? --Sorry. I’m too busy to _______ for the moment.
They couldn’t eat in a restaurant because ______ of them had _______ money on them.
Look! There are lots of ________ birds flying over the trees.
--Can you finish the writing on time? --_________.