There's no way of knowing why one man makes an important discovery________another man,also intelligent,fails.
__________ on their own efforts, they overcame all the difficulties and finished the task ahead of time.
Tom can't have received the invitation; otherwise he __________ your birthday party yesterday.
I would like to __________ my daughter to the game on Sunday.
The watch that was 50% off was beautiful, so I couldn't resist __________ it.
The two pictures are similar, although not __________.