54. It's very cold outside. You should put on more clothing to ______, otherwise you will catch bad cold.
The blame for this accident attaches ______the driver who drank too much.
It will be years _______ all children can go to school free of charge at all
Lily often watches TV, so ________.
The boys, _______ _had played the whole day long, were tired.
Yuan Long ping is ______ university professor. He likes playing _____ violin.