What _________ you ________(write) at this time yesterday

问题描述:

What _________ you ________(write) at this time yesterday

根据语意,昨天的这个时候,你正在做什么.明显是过去进行时.那么,这里自然就填写 were、wrting.有个简单的技巧,先描述成现在进行时态的陈述句:You are writing……,然后描述成过去进行时:You were writing……,然后...