Hardly ______when they ran toward it.

Hardly（）home when it began to rain.

（）at the railway station when it began to rain.

Only when I began to do it ____ that I had made a mistake.

_______ got to the hotel yesterday evening when it began to rain heavily.

The guard, fencing or shielding for moving parts or machinery can be removed for repair only when the machinery it belongs to（）

Believe it or not, when first (introduce) ____ to Europe, tomato was thought to be poisonous.

The guard, fencing or shielding for moving parts or machinery can be removed for repair only when the machinery it belongs to（）

_____ it began to rain.

Hardly（）home when it began to rain.

Mary _____ in the garden when it began to rain.

When the expression first came into heing, people refused to use it but ______ they began to accept it.