Only by telling the truth（ ）win the trust and support of your friends.
Only in my thirties （ ） a purpose in life.
The organization had broken no rules, but （ ） had it acted responsibly.
Every one of us must know：（ ）we live can we save the earth.
——My room gets very cold at night.
——（ ）.
There was a loud crash as the door broke, and（ ）in the police.
The professor warned the students that on no account ( ) use mobile phones in his class.
So loudly（ ）that all the people in the room got a fright.
——I missed the train home last night.——So（ ）.
Only when I began to do it（ ）that I had made a mistake.
Seldom（ ）any mistakes during my past five years of service in the company.
Natural gas can serve as an（ ）to coal and oil because it is more environmentally friendly.
We'll visit Europe next year （ ） we have enough money.
He had to quit the job（ ）his ill health.
The job applicant was worried about the interview（ ）he was well prepared.
You'd better speak loudly at the meeting（ ）everyone can hear you.
（ ）is known to the world, Mark Twain was a great American writer.
（ ）my daughter reaches the age of eighteen, she can apply for driving license.
I’d like to go with you;（ ）, my hands are full at the moment.