You can only be sure of _____ you have at present;you cannot be sure of something _____ you might get in the future.
He got up late and hurried to his office,__________ the breakfast untouched.
Nowhere else __________ be able to find a larger display of sea animals, including one of the largest collections of sharks in the world.
To reach your goal(目标),you should make a good plan and __________ make good use of your time.
I choose to shop __________ because it saves time and effort.
__________ be sent to work there?