diff --git a/labcodes_answer/lab8_result/kern/mm/swap_fifo.c b/labcodes_answer/lab8_result/kern/mm/swap_fifo.c
index ae6caf3..4f9dc8f 100644
--- a/labcodes_answer/lab8_result/kern/mm/swap_fifo.c
+++ b/labcodes_answer/lab8_result/kern/mm/swap_fifo.c
@@ -110,6 +110,13 @@ _fifo_check_swap(void) {
     cprintf("write Virt Page d in fifo_check_swap\n");
     *(unsigned char *)0x4000 = 0x0d;
     assert(pgfault_num==9);
+    cprintf("write Virt Page e in fifo_check_swap\n");
+    *(unsigned char *)0x5000 = 0x0e;
+    assert(pgfault_num==10);
+    cprintf("write Virt Page a in fifo_check_swap\n");
+    assert(*(unsigned char *)0x1000 == 0x0a);
+    *(unsigned char *)0x1000 = 0x0a;
+    assert(pgfault_num==11);
     return 0;
 }