89. At that time I had no idea ________ I could hand it to him without being seen.A. if B. how C. which D. that how为什么选B? D有什么不对?

At that time I was a I saw that Jenny was running at that time同义句 I ___Jenny ___at that time I heard that she was singsing at that time. At that time i know i can't leave you i saw that she was doing her homework at that time.同义句i saw her homework at that time. I wish time could stop at that moment forever. I ____(write) a letter at that time Could I call you at that time?汉语 at that time 用法 at that time at what time at that time呢 I saw that Jenny was runing at that time I __Jenny __at that time改为同义句 i did my homework carefully(用at that time改写) i___ ____my homework carefully at that time I only regret that I didn't hold you tight at that time. Only at that time,I knew that I already had the same one. where does the time fly… I looked so young at that time 翻译It was at that time that i learnt a valuable lesson in my life翻译 I kown that you were hanving supper at that time怎么变翻译疑问句?指导下