Advertisements are powerful and some companies try to mislead us, so we be caref
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Advertisements are powerful and some companies try to mislead us, so we ________ be careful when reading them.
A.can
B.may
C.must
D.would
试题答案
C
句意：广告攻势强大，再加上一些公司千方百计误导我们，因此在读广告时，我们务必要小心。must意为“必须”“务必”。