The girl sometimes has difficulty()what the teacher says in class.
A、understand
B、understanding
C、to understand
D、understood
A、understand
B、understanding
C、to understand
D、understood
A、always move slowly B、are in one place only C、sometime move sometime don‟t move D、are synchronizing with the movement of the earth
A、How can I know? B、Yes, I remember it now. C、It's Sam, my teacher's daughter D、She is a good girl.
A、A.always move slowly B、B.are in one place only C、C.sometimes move and sometime don‟t D、D.synchronize with the movement of the earth