Change build target to APi 16
Merge pull request #21 from HungTDO/develop

Change build target to APi 16
Merge pull request #22 from dinhphamcao/master

Add BD + Media files for Listening 1
Merge pull request #23 from dinhphamcao/master

edit type of image jpg to png
Add handle Database for Exam Table
Merge pull request #24 from HungTDO/develop

Add handle Database for Exam Table
add db
edit db + image dialog 73