A. he B. that C. who D. what
A. refer B. refers C. referring D. referred
A. was B. were C. being D. been
A. danger B. endanger C. dangerous D. dangerously
A. that B. if C. to D. which
A. reply B. respond C. respond to D. imply
A. from...to... B. in...in... C. from...until... D. to...to...
A. annoy B. annoying C. annoyed D. annoys
A. convenience B. convenient C. much convenient D. conveniently
A. satisfy B. satisfied C. dissatisfy D. dissatisfied