1. In the following table, two of the logarithmic values are incorrect. Please correct them.
\begin{tabular}{|c|c|c|c|c|c|c|}
\hline$x$ & 0.021 & 0.27 & 1.5 & 2.8 & 3 & 5 \\
\hline $\lg x$ & $2 a+b+c-3$ & $6 a-3 b-2$ & $3 a-b+c$ & $1-2 a+2 b-c$ & $2 a-b$ & $a+c$ \\
\hline$x$ & 6 & 7 & 8 & 9 & 14 & \\
\hline $\lg x$ & $1+a-b-c$ & $2(b+c)$ & $3-3 a-3 c$ & $4 a-2 b$ & $1-a+2 b$ & \\
\hline
\end{tabular}
Consider the basic data: $\lg 2=1-a-c, \lg 5=a+c$. Correct; $\lg 3=2 a-b, \lg 6=1+a-b-c$. Correct; thus $\lg 1.5=3 a-b+c-1$. Among the remaining data, $\lg 21=2 a+b+c, \lg 28=$ $2-2 a+2 b-c, \lg 14=1-a+2 b, \lg 7=2(b+c)$, only one is incorrect. If $\lg 7$ is correct, then the first three data points are all incorrect, thus $\lg 7=2 b+c$. Therefore, the two corrected values are: $\lg 1.5=3 a-b+c-1, \lg 7=2 b+c$.