-Where did you get this book?-I picked it up from a second-hand bookshop if you __________ know.
Only when I left my parents for Italy ______ how much I loved them.
Uncle George didn’t ______ until he was nearly fifty.
Although badly hurt in the accident, the driver was ______ able to make a phone call.
The weather was ______ cold that he didn’t like to leave my room.
Dogs have a very good ______ of smell and are often used to search for survivors in an earthquake.