关于while的选择题While she _________ TV in the sitting room, the bell________.A. watches, rings B. is watching, rang C. was watching, rang D. watched, was ringing 正确答案是C 我选的D..我知道不对,但是说不出具体原因谁

while(! while while(! while 一道关于when和while的选择题_________did the bell ring?________ we were having dinner,the bell rang.A.when;when B.when;whileC.while;while D.while;when答案是B,可我觉得A、B都对.when可以用来代替while不是么,它既可 关于while的选择题While she _________ TV in the sitting room, the bell________.A. watches, rings B. is watching, rang C. was watching, rang D. watched, was ringing 正确答案是C 我选的D..我知道不对,但是说不出具体原因谁 while引导的从句(选择题)The singer is singing happily ( ) guitar crazily.A.while playing the B.while he played theC.while playing D.while he played选B怎么不行了,从句啊 C语言while()和while();的区别. since,when,while的区别,我要关于语法的,例如,while sb bedoing 关于WHILE的用法,并请用WHILE造几个句子 关于while的用法 Toby was watching TV while Tim____(do)his homework at 7 PM 关于when 和 while 的有关练习题目when 和while ★C语言 关于while语句的一个选择题在以下给出的表达式中,与while(E)中的(E)不等价的表达式是A）(E>0||E while&when的区别. while怎么读的 While的用法 和while的用法! while的用法?