4. (3 points) Fill in the blanks in 10 □ 10 □ 10 □ 10 □ 10 with the operation symbols “+” “-” “×” “÷” each once, the maximum value of the resulting expression is ( )
A. 104
B. 109
C. 114
D. 119
【Analysis】The question requires filling in only the operation symbols, without adding parentheses; the operation order is to calculate multiplication and division first, then addition and subtraction. To maximize the result of the operation, the number being subtracted should be as small as possible.

【Solution】Since the minus sign can only be used once, and the subtrahend cannot be 0, the operation result is maximized when $10 \div 10=1$ is used as the subtrahend:
$$
\begin{array}{l}
10 \times 10+10-10 \div 10 \\
=100+10-1 \\
=109
\end{array}
$$

Therefore, the answer is: $B$.