基本信息
21．what is your main reason for choosing one restaurant ______ another? a．from b．over c．on d．by 22．babies' health is much more likely to be affected if______ parent smokes． a．both b．none c．neither d．either 23．she was busy preparing gre, ____she managed to find time to help her roommate with the paper． a．or b．so c．but d．and 24．the temperature in our city ______ fall to —13℃ in winter． a．shall b．can c．must d．should 25．tom does speak chinese well, but his reading and writing skills leave much . a．to improve b．to be improved c．being improved d．having improved 26．he is always ready to help others, never ____ them when they turn to him． a．refuse b．to refuse c．refusing d．refused
