－Do you know _______ World Water Dayis－On March 22nd.

Such food doesn’t keep long. You may as wellit in fridge.

The look on his face suggested that he just happened _______ the secret and _______ he himself was very shocked, too.

Tom, would you like to go to our English party this Saturday— ____________________.

It’s selfish ________ him ________ the cakes with others.