Charlie, don't read in the sun!It is badfor your eyes !( )
is good for
is harmful to
is cruel to
is sad for
Learn ________ ,and you will be a successful learner.( )
wisely
lazily
quickly
blindly
Don't you know passengers ________ smoke on high﹣speed trains?( )
needn't
mustn't
wouldn't
couldn't
Our national hero Yue Fei _______ to devote (贡献) himself to the country at a young age.( )
failed
forgot
promised
refused
Your dad has just fallen asleep.Don't wake him up ______ it's really necessary.( )
unless
or
and
but
Cathy always makes good use of her time to study,even _______ her lunch break.( )
around
during
from
between