21. Thank you for sending us ____ fresh vegetables of many kinds. You have done us _____ great service. A. 不填；a B. the；a C. 不填；不填 D. the；不填
22. Canada is a country ________ many different nationalities as well as one with foreign
immigrants __________ the majority of its population.
A. making up of; occupied with B. consisting of; making up
C. made up of; consisting of D. consisted of; taking up
