semester ,science,had,this,time,I,a,hand,with连词成句

She wasn’t good at science last semester改为同义句 She——— ——— ———in science last semester I had a really hard time ____(study) science this semester. I had a really hard time to science this semester.改错句 semester ,science,had,this,time,I,a,hand,with连词成句 英语翻译本学期我在科学上很吃力I _____ ______ ______ ______with science this semester I feel hard learning science this semester.为什么feel hard 后用了learning而不用learn, science? Science science science semester是什么意思? semester是什么意思 英语单词“semester ” semester credit I had a really hard time with my science this semester大神们帮帮忙請幫我翻譯一下中文 my new semester 中的semester是什么意思? 填介词She said she had a really hard time ___science this semester.为什么?补充问题：with,in,at在修饰课程（如science,math）时,有什么不同? Semester-summary是什么意思