Answer:
Bussu is an app that helps you learn different languages.Other than that duolingo i guess.But the best one is bussu
Explanation:
A. 4x +6-3x is the expression among them
春兰花和菊花都很漂亮。
habeo: I have
habes: You have
habet: He/She/It has
habemus: We have
habetis: You all have
habent: They have