A. must be B. had to be C. had been D. must have been
A. does B. is C. do D. are
A. whenever B. whether C. whichever D. whereas
A. in terms of B. regardless of C. with respect to D. in accordance with
A. respectively B. separately C. extraordinarily D. exclusively
A. transmit B. shift C. remove D. cancel
A. took to B. woke up C. came to D. picked up
A. press B. compel C. impose D. pose
A. with B. at C. over D. to
A. overcome B. overlook C. overtake D. overwhelm