-- _____is that used for?---_____ the floor.
----How do you like the book?----It’s quite different from ______ I read last month.
I will carry out the plan _____ there is much difficulty ahead.
When I was passing the Town Hall, I heard the clock ______ twelve.
Your brother ______you is very kind to me.
Mr. Smith is very happy because the cars made in his factory have never been ______.