You are waiting in a long line to get on a roller coaster(过山车). To make the time go faster you count the people ahead of you and find that you are the 38th in line. Then you look behind and feel pretty lucky because you count that you are the 56th from the end.

How many people are there in line?

Hints(提示)：

1．Use smaller numbers in the problem a couple of times to see if you can find a pattern(列式).

2．Drawing a diagram(图表) when using smaller numbers can help you find the pattern.

You            stand in line while waiting for the bus.

A. mustn’t          B. can’t       C. are supposed to      D. don’t

You            stand in line while waiting for the bus.

1. A.
   mustn’t
2. B.
   can’t
3. C.
   are supposed to
4. D.
   don’t