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 you when the earthquake happened?
| A．were; doing | B．did; do | C．are; doing | D．would; do |
The young woman sings as as the singer.
| A．good | B．nice | C．well | D．better |
I want to buy a hat, but there are so many kinds that I can’t decide to take.
| A．which | B．when | C．how | D．where |
Many students think hard to learn English well.
| A．that | B．it | C．this | D．its |
There are about five people in the town, mainly the old and children.
| A．hundred | B．hundreds | C．hundred of | D．hundreds of |