Only when I left my parents for Italy ______ how much I loved them.[ ]

_____ the flight to New York will be delayed is ____I’m especially worried about.

下列各句中，没有语病的一句是( )

The house is easily______ from the rest; it has a large blue door.

When I passed this afternoon, I saw a little boy was lying on the grass, his hands _____ under his head.