17 、Use $1 \times 2$ tiles to cover the following $2 \times 10$ grid, then there are $\qquad$ different ways to cover it.
Analysis: This problem is the same as walking up stairs, either taking one step or two steps, with a total of ten steps. If there is only the first column: 1 way
Only the first two columns: $1+1=2$ (ways)
Only the first three columns: $2+1=3$ (ways)
Only the first four columns: $3+2=5$ (ways)
According to the above pattern, the subsequent numbers are $8, 13, 21, 34, 55, 89$, so the first ten columns have 89 ways.