Though she was disabled,she maintained a positive attitude ______ human life.
Our government ______ all people to save energy and fight against pollution.
Only in that way _______ ready for the challenges and opportunities in life.
— Are you going to the party this weekend?— ______.
Helen ______ go on the trip with us, but she isn’t quite sure yet.
It may rain --- you’d better take an umbrella _______.