diff --git a/exercises/075_quiz8.zig b/exercises/075_quiz8.zig
index 63d208b..b9fc50d 100644
--- a/exercises/075_quiz8.zig
+++ b/exercises/075_quiz8.zig
@@ -49,7 +49,11 @@ const Path = struct {
 //
 // Please fill in the body of this function!
 fn makePath(from: *Place, to: *Place, dist: u8) Path {
-
+    return Path{
+        .from = from,
+        .to = to,
+        .dist = dist,
+    };
 }
 
 // Using our new function, these path definitions take up considerably less
diff --git a/exercises/076_sentinels.zig b/exercises/076_sentinels.zig
index 357bd95..dfa32b8 100644
--- a/exercises/076_sentinels.zig
+++ b/exercises/076_sentinels.zig
@@ -82,7 +82,7 @@ fn printSequence(my_seq: anytype) void {
             print("Array:", .{});
 
             // Loop through the items in my_seq.
-            for (???) |s| {
+            for (my_seq) |s| {
                 print("{}", .{s});
             }
         },
@@ -94,7 +94,7 @@ fn printSequence(my_seq: anytype) void {
             // Loop through the items in my_seq until we hit the
             // sentinel value.
             var i: usize = 0;
-            while (??? != my_sentinel) {
+            while (my_seq[i] != my_sentinel) {
                 print("{}", .{my_seq[i]});
                 i += 1;
             }
diff --git a/exercises/077_sentinels2.zig b/exercises/077_sentinels2.zig
index fb8f13d..3892898 100644
--- a/exercises/077_sentinels2.zig
+++ b/exercises/077_sentinels2.zig
@@ -60,7 +60,7 @@ pub fn main() void {
     // length... You've actually solved this problem before!
     //
     // Here's a big hint: do you remember how to take a slice?
-    const printable = ???;
+    const printable = foo.data[0..11];
 
     print("{s}\n", .{printable});
 }
diff --git a/exercises/078_sentinels3.zig b/exercises/078_sentinels3.zig
index 1e443e6..90b953f 100644
--- a/exercises/078_sentinels3.zig
+++ b/exercises/078_sentinels3.zig
@@ -21,7 +21,7 @@ pub fn main() void {
     const data: [*]const u8 = "Weird Data!";
 
     // Please cast 'data' to 'printable':
-    const printable: [*:0]const u8 = ???;
+    const printable: [*:0]const u8 = @ptrCast(data);
 
     print("{s}\n", .{printable});
 }
diff --git a/exercises/079_quoted_identifiers.zig b/exercises/079_quoted_identifiers.zig
index 182c7ff..6abbe59 100644
--- a/exercises/079_quoted_identifiers.zig
+++ b/exercises/079_quoted_identifiers.zig
@@ -20,11 +20,11 @@
 const print = @import("std").debug.print;
 
 pub fn main() void {
-    const 55_cows: i32 = 55;
-    const isn't true: bool = false;
+    const @"55_cows": i32 = 55;
+    const @"isn't true": bool = false;
 
     print("Sweet freedom: {}, {}.\n", .{
-        55_cows,
-        isn't true,
+        @"55_cows",
+        @"isn't true",
     });
 }