_______ the calculation is right, scientists can never be sure that they have included all variables and modeled them accurately.
John went to the hospital alone. If he me about it, I would have gone with him.
The girl is an excellent student but not once in these years________ caught being late.
Frank put the medicine in a top drawer to make sure it would not be __________ to the children.
_____ of danger in the street at night, she had to go home with a friend _____ her.
On the sea near Diaoyu Island, ________ Chinese fishing boat was stopped by the Japanese and ________ sailors were arrested illegally.