【正文】
you do not understand. A. what B. which C. as 3 D. those 15. This is the reason _______ an aeroplane can39。t see anything. A. from which B. without which C. under which D. with whom 23. _______ is known to all, China will be an _______ and powerful country in 20 or 30 years39。 advanced D. It。 that D. when。 which B. when。 advancing B. This。t a single person _______ she could turn for help. A. that B. who C. from whom D. to whom 18. She heard terrible noise, _______ brought her heart into her mouth. A. it B. which C. this D. that 19. He paid the boy 10 dollars for washing ten windows, most of _______ hadn39。 1 第 五 講