A . Lego's plan to rent bricks out.B . Lego's plan to produce less complex sets.C . Lego's plan to invest in a new field.D . Lego's plan to develop sustainable materials.
（2）
A . Dealing with lost bricks.B . Finding enough raw materials.C . Reducing carbon emissions.D . Employing suitable technicians.
（3）
A . It's complex and unrealistic.B . It can appeal to more children.C . It's eco-friendly but challenging.D . It can promote non-plastic bricks.
