高中英语句子At that time i had no idea how i could hand it to him without being seen.为什么这句话中idea后面不要that?It is well konw what a person eats causes changes in the body.这句话中为什么know后面不要that?

高中英语填空That was my ______ first hug and i was 11 years old at that time.A very B quite C ever Djust At that time I was a 高中英语句子At that time i had no idea how i could hand it to him without being seen.为什么这句话中idea后面不要that?It is well konw what a person eats causes changes in the body.这句话中为什么know后面不要that? 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. 在英语句子中的At that time可以换成that time么?（句尾） 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.