25. ―Look! What a mistake! Why?―Sorry, I _________ on it.
______ the project as planned, we’ll have to work two more hours a day.
He has been absent ________ class for quite a long time.
I was very________ to find that the cinema was not accessible to the elderly or people in wheelchairs.
If you live in the countryside , ____ are that you have heard birds singing to welcome the new day.
Since he has made such good preparations , there ______be any difficulty in winning the first prize.