Everything we do is aimed at letting people____more happily.
A. will live
B. live
C. to live
D. lives
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Researchers believe happiness can be separated____two types:
A. to
B. into
C. up
D. for
The happiness of your life depends____the quality of your thoughts.
A. with
B. in
C. upon
D. to
accomplish的名词是____
A. accomplishing
B. accomplishtion
C. accomplishing
D. accomplishment
bitter的名词是____
A. bitterness
B. bittering
C. bitterest
D. bitteness