—Who______ it be that is knocking at the door? —It ______ be Father, but I’m not sure.
Was it because it snowed last night ____ he didn’t come?
.The purpose of the research had a more important meaning for them than ______.
Believe it or not, he came _______.
Work starts every day at 7 a.m. and goes on until late afternoon _____ a break at midday .
Perhaps this is the only market ____ you can get such cheap goods.