The traffic rule says young children under the age of five and _______ less than 25 kilograms must be in a child safety seat. 

-- Isn’t it time you _____ down to _______ your own things? --- I’m sorry for the delay, Dad.

The woman ____there under the tree, ____ in a blue shirt, is our headmaster.

She was the only one __________ the wreck.

We had to walk home that night, tired , on account of , to our disappointment, __________．