--It is said that Jack is very rich and is always changing his private cars. What is he?-- ________,I am not sure.
The form cannot be signed by anyone ___________ yourself.
The dog may be a good companion for the old. ___________, the need to take it for walks may be a disadvantage.
As is known to all language learners, the newly learnt words will soon be forgotten unless ___________ used in everyday communication.
—Hi, Mark. How was the musical evening? —Excellent ! Alex and Andy performed ___________ and they won the first prize.
The young man couldn't afford a new car. ___________,he bought a used one.