You can show your love to your mom by giving her flowers that match her personality. Or, if you do not know your mom's ______, carnations could be your best choice.
--- I wonder if I could use your telephone? --- _________.
The watch ______ unnoticed for several days before I found it.
—What do you think of his opinion? —None has given me ___________ piece of advice.
It has been proved _______ eating vegetables in childhood helps to protect you against serious illnesses in later life.
It is reported that the United States uses ____ energy as the whole of Europe.