英语必修2译林牛津版unit 2精品
学案（第13课时） period 13 practice practice ⅰchoose the best answer. 1. mr. smith is so busy ______ his office work that he spends little time ______ after his children. a. in; looking b. with; to look c. with; looking d. in; to look 2. can you imagine traveling alone _____ camel in sahara desert? you won’t get lost easily ______ camels.
