---You’d better _____ quiet here. Look at the sign.
---Sorry, I don’t notice it
| A．keep | B．to keep | C．keeps | D．keeping |
Helen is 15 years old, and Joan is 15, too. So Helen is ____ Joan.
| A．as big as | B．as older as | C．as old as | D．so old as |
—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 |