Since the end of the war, many of the priceless antiques ______ to their rightful owners

I can still recognize Mr Johnson, who is standing by the door, even though he looks ___different now

What time would it be ______ for me to come round?— Any time will do as long as you are free

How can I improve my English more quickly — ________ listening and reading more.

My room gets very cold at night.— ______.