单项选择(每题1分)Please do me _______ favor and pass me the cup of ______ coffee.
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.