We were about to go out for a walk ________ it began to rain.
When first ____ to the market, the products enjoyed great success.
What surprised me was not what he said but _____ he said it.
It was raining heavily. Little Mary felt cold, so she stood ____ to her mother.
The problem he referred to _____ difficult, but is isn’t at all.
A good idea just _____ me. ----Let’s go swimming.