Jack usually checks his test paper_________ before handing it in (careful)急,各位好心的哥哥姐姐叔叔阿姨们,老师还让写原因

问题描述:

Jack usually checks his test paper_________ before handing it in (careful)
急,各位好心的哥哥姐姐叔叔阿姨们,
老师还让写原因