_____ he met with the difficulty did he realize the importance of group work.
The little boys were tricks on the girl when their teacher came into the classroom.
You did not perform as well as the other competitors--- ,you failed.
I like getting up very early in summer. The morning air is so good ______.
The fire made _____ difficult to rescue the people trapped under the ruins in the earthquake.
The mother waved to her daughter until the train .