Update duckdb index files

.gitattributes

@@ -59,3 +59,4 @@ AsakusaRinne--Gaokao_bench/train/index.duckdb filter=lfs diff=lfs merge=lfs -tex
 2010-2022_Chemistry_MCQs/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 2010-2022_Chinese_Lang_and_Usage_MCQs/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 2010-2022_Chinese_Modern_Lit/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+2010-2022_English_Fill_in_Blanks/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

2010-2022_English_Fill_in_Blanks/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5f8b4b41c17f87aee7f247cf80a556ccffd580b9112500417ce49d4ef41302a2
+size 1323008