Not until he arrived home _____ he find that this wallet had been stolen.
| A．did | B．would | C．when | D．that |
Children need friends ________ their own age to play with.
| A．of | B．for | C．in | D．at |
He invited me to a dance after the show ________ Christmas Eve.
| A．at | B．on | C．in | D．by |
Would you mind not picking the flowers in the garden？They are ________ everyone's enjoyment.
| A．in | B．at | C．for | D．to |
My father warned me ________ going to the West Coast because it was crowded with tourists.
| A．by | B．on | C．for | D．against |
Nowadays some hospitals refer to patients ________ name，not case number.
| A．of | B．as | C．by | D．with |