The two girls are so alike that strangers find __________ difficult to tell one from the other.
It is not always easy for the public to see _______ benefit a new invention can be of to human life.
__, Mark Twain became worldwide famous at once.
The old lady’s hand shook frequently. She explained to her doctor _______this shaking had began half a year before, and ______, only because of this, she had to give up her job.
–Would you mind me using your computer now?–_________. I’m not using it now anyhow.
After they married, they decided to move back to the village and _______.