Special Products Co. --how to order
Our speciality is our convenient catalogue system. Instead of
spending time going to a shop, you simply order it direct from
Each item is under unconditionally guaranteed for 6 months.

A．expand
B．to extend
C．expanded
D．extended

A．should accept more students than it does
B．provides people with important skills for employment
C．offers language courses which are too short to help students