.The train _____ at the present speed until it reaches the foot of the mountain at about nine o’clock tonight.
No sooner ____ to the station ____ the train left.
If you don't go, neither ____.
Only by practising a few hours every day ____ be able to master the language.
Not until I began to work ____ how much time I had wasted.
I want to be left alone ___ things out.