When first____ to the market, these products enjoyed great success.
What will people die of in 100 years? If you think that is a simple question, you ______ attention to the revolution taking place in biotechnology.
The government has taken some measures to solve the shortage of electricity, but it may be some time _________ the situation improves.
Mandela, having devoted all his life to the freedom of South African Blacks, is a real fighter for us to_________.
You cannot imagine what great trouble I took ______ your house.
Jordan kept his illness from his opponents before the final game ________ they might know about it.