So quickly are science and technology advancing ________ is a possibility today may be a reality tomorrow

When they got there,they found the people suffering the storm were________food and water supplies.[ ]

The two sportsmen congratulated each other________ winning the match by shaking hands.[ ]

When he was ten, Edison ___ a small lab of his own.

Are you happy with your new computer? — No, it is _____ me a lot of trouble. [ ]