是in studying还是on studying eg You can do well ___ your studying if you work hard.

是in studying还是on studying eg You can do well ___ your studying if you work hard.
是in studying还是on studying eg You can do well ___ your studying if you work hard.

是in studying还是on studying eg You can do well ___ your studying if you work hard.
in,do well in 是固定搭配