When you get on a bus, the conductor will usually warn you ___ a thief.
| A．about | B．to | C．at | D．on |
—What ____ news!
—Yes, all of the children were ____.
| A．excited; exciting | B．exciting; excited |
| C．excited; excited | D．exciting; exciting |
New York is one of ____ in the world.
| A．the large cities | B．the large city | C．the largest cities | D．the largest city |
Do you have difficulty ____ English?
| A．to learn | B．of learning | C．learning | D．learn |
. —Why do you ____ very happy this afternoon?
—Because we are going to spend the evening at Lily’s house.
| A．taste | B．sound | C．look | D．smell |
—Michael has a fever, so he isn’t able to come.
—____
| A．I’m sorry to hear that. | B．I’m disappointed. |
| C．Good luck. | D．Take it easy. |