we should Keep our classroom ---A.cleaned B.clean C.cleaning D.to clean
選 B.
keep sth clean 保持.干凈, 它是個固定的結(jié)構(gòu).
keep the classroom clean and tidy
keep your hands dry
we should Keep our classroom ---A.cleaned B.clean C.cleaning D.to clean說說原因
we should Keep our classroom ---A.cleaned B.clean C.cleaning D.to clean說說原因
英語人氣：107 ℃時間：2019-10-09 03:53:59
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