One of the best ways for people to keep fit is to（）healthy eating habits.

单项选择题It is reported that the police will soon look （）the case of the two missing children.

A．upon
B．after
C．into
D．out

单项选择题Don’t worry if you can’t understand everything. The teacher will （） the main points at the end.

A．recover
B．review
C．require
D．remember