单项选择：____ the chief doctor is performing an operation on the hero.A.Right away B.Right now C.In no time D.Just now麻烦把各个选项的意思解释一下,再把整个句子翻译一下.再解释一下为什么选这个选项.

单项选择：____ the chief doctor is performing an operation on the hero.A.Right away B.Right now C.In no time D.Just now麻烦把各个选项的意思解释一下,再把整个句子翻译一下.再解释一下为什么选这个选项. Who is elected ____ the chief editor?填介词 一道英语题（单项选择）There is ____Mon the blackboard.A letter B an C/ D a 单项选择Look!There are a lot of children ____ on the playground.A.playing B.are playing Do you like ____ the bus to school?单项选择A.takes B.taking C.take D.by 单项选择, 单项选择. 单项选择, 单项 选择 单项选择, 单项选择 单项选择 单项选择 单项选择 单项选择 单项选择, 单项选择, 单项选择,