He has some trouble ____ his classmates but he has no trouble ____ doing his lessons. [ ]

A. with; with

B. with; in

C. in; in

D. in; with

属于偶数羽状复叶的植物有（）。

A.蓝花楹

B.凤凰木

C.南洋楹

D.双荚决明

E.翅荚决明