\[\boxed{\mathbf{8.}}\]
\[7 \cdot 1 = 7\]
\[7 \cdot 2 = 14\]
\[7 \cdot 3 = 21\]
\[7 \cdot 4 = 28\]
\[7 \cdot 5 = 35\]
\[7 \cdot 6 = 42\]
\[7 \cdot 7 = 49\]
\[7 \cdot 8 = 56\]
\[7 \cdot 9 = 63\]
\[7 \cdot 10 = 70\]