问题描述:
Professor Smith,along with his assistants, ____on the project day and night to meet the readline.
A.work B.working. C.is working D.are wonking
肯定不选D 那选什么呢 解释一下
A.work B.working. C.is working D.are wonking
肯定不选D 那选什么呢 解释一下
问题解答:
我来补答展开全文阅读