The earth became so violent that it was not clear_________ the shape would last or not.
Don’t waste your words any more; she is as ______ as a mule (骡子) and no one can persuade her.
The child asked his mother ______ go out to play tennis.
______ the tiger gets angry, it will be extremely dangerous.
From the distance, the buildings look ________ they touched the clouds.
His family had different ______ towards his decision, which made him very unhappy.