Single-parent usually____ some of the functions that absent adult in the house would have served under the financial crisis.

He was asked to _______ his class making a speech atthe school opening ceremony

Did you watch the football game on TV last night?-Yes,I did.It was________,and I enjoyed every minute of it.[ ]

Volunteering is becoming increasingly popular in China.—Yes. People are now __________ that helping others is helping themselves.

Nick was __ _to talk with me last night, so I had no idea about the progress of the project