The environment is terrible.
I think it will be even worse the government takes actions to protect it. ( )
A.untilB.whenC.ifD.unless
It's time______class. Lets go into the classroom.
OK.( )
for
of
in
找出画线部分与其他单词发音不同的选项.( )
knee
knock
kilo
autumn
August
aunt
worse
storm
north
follow
rose
hobby
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