A. this B. which C. that D. same
A. whose B. of which C. which D. its
A. what B. which C. that D. when
A. that B. where C. which D. there
A. in which B. in that C. in whose D. whose
A. treated B. cured C. infectious D. popular
A. altitude B. attitude C. gratitude D. aptitude
A. resign B. resist C. refuse D. reserve
A. assigned B. contributed C. attributed D. transferred
A. vary B. change C. alter D. convert