If you decide to learn a foreign language ,you must work hard on _英语解答

If you decide to learn a foreign language ,you must work hard on it every day.Only in this way can you have a good ____D____of it.
A concern B company C condition D command
为什么要选D

人气：259 ℃　时间：2020-03-26 11:06:07

解答

have a good command of sth固定搭配,意思是对某事掌握的很好.