_______ on time, this medicine will be quite effective.
The computer is in ________ bad condition ________ I can’t work with it.
I’m glad to say that he’s already finished ________ 50% of the book in these three days.
All possible means _______. However, nothing can _______ him dying of lung cancer.
Do you think ________ life on Mars?
At the ________ news, there was a ________ expression on his face.