It's not always safe to pay over the Internet， you should be careful．（ ）
| A． |
so |
B． |
after |
C． |
because |
D． |
as soon as |
﹣﹣﹣ I hand in the report today？
﹣﹣﹣No，you needn't．（ ）
A．CanB．MustC．ShallD．Could
The hotel is very old．It's one of buildings in the city．（ ）
A．oldB．olderC．oldestD．the oldest
﹣﹣﹣ did you stop playing？
﹣﹣﹣Because I was tired．（ ）
A．HowB．WhyC．WhenD．Where
More and more young people go skating winter．（ ）
A．atB．inC．onD．to
My father is a worker． is very kind．（ ）
A．HeB．SheC．HisD．It