—Thank you for providing such useful information for me.—________.
---It’s generous ________ Millie to donate all her pocket money to UNICEF.---Yes. It is really meaningful _________ us to do something for charities.
---It’s nice day, isn’t it?---Yes, what fine weather!
The windows of classroom _____ up every week.
I really don’t know _______
Students are often told _____ at people who are in trouble.