______ kind and helpful to the people around us, we will make the world a nicer place to live in.
A. Be
Being
C. To be
D. Been
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Give me one more minute ____ I’ll be able to finish it.
A. and
B. or
C. if
D. so
Train as hard as you can ____ you’ll win the swimming competition.
A. then
B. but
C. and
D. or
I’m sorry to have to say this, ____ you forgot to turn off the lights when you left the room last night.
A. and
B. but
C. so
D. because
Mary went to bed early, ____ she felt very tired.
A. or
B. so
C. for
D. yet