There's a saying, “Life is 10% ________ happens to us and 90% ________ we choose to react to it.”
The pen well, so it ___ well.
Hurry up ___ we ___ miss the train.
We were having evening class ____ the light went out.
When I jumped into the river, the water ___very cold.
Since the project has been ___ on well, you must ___ it on until it is completed.