It's quite difficult to master French in 2 or 3 years. ✬

It takes a great deal of practice to master a foreign language. ✬

It takes years to master a foreign language. ✬

A jack of all trades is a master of none. ✬

Please bring the master key. ✬

He tried to master French. ✬

Practice is the only way to master foreign languages. ✬

Tom is working toward a master's degree in engineering. ✬

The dog followed its master, wagging its tail. ✬

If you want to master a foreign language, you must study as much as possible. ✬