Don’t defend him any more. It’s obvious that he ______ destroyed the fence of the garden even without apology.

After Ya’an earthquake the school practiced an emergency drill showing the children how to         find their “safe place”____. 

 —I’m driving to Beijing after breakfast. —Take care,   with all this fog.

Flight attendants usually need to arrive at the airport ______ before their flight leaves.

My grandfather spends most of his time _______ because he loves nature.