Mother asked her why __________ to bed so late the night before.
To get to the top of the mountain, we had to _______.
When he entered college, he began to learn _____ language.
The shop manager always says to his assistants, "We can never be ______customers.
--Did Mary come to your birthday party? --No. I __________ her, but she was away on business.
All the preparations_____, we're ready to start.