Question

求解两道英语题

1.Three millon tons of ____ every year in the city.
2.Thousands oftons of rubbish ____ over a large period of time.
3.Six million towns of oil ____ exploited in this area last year.
A. was B. were
为什么第一题答案is exploited.谓语动词用单数,第二题答案rot away.用复数 第三题选啥呢
1.Three million tons of coal ________ every year in the city. 答案是A
A is exploited B are exploited C had exploited D have exploited
.2.Thousands of tons of rubbish ____ over a large period of time.
A.rots away B.rot away C.has rotted away D.are rotted away 答案B
3.3.Six million towns of oil ____ exploited in this area last year.
A. was B. were 答案 B
这到底为什么 我快崩溃了

Answer 1

第一题的题目写对了吗？是Three million tons吧~
第二题看时间，over a large period of time 是指过去的时间，所以用过去式
第三题选A

Answer 2

1、因为coal是不可数的。所以用单数。
2、用的是root的过去式，切实主动形式的rot，因为是过去式不能加s。
3、第三题我也非常疑惑，是否答案错了呢？

追问

root 的过去式 不可能吧 原型是rot

过去式也该是 rotted啊

Answer 3

oil不可数，用was

Answer 4

A,物质名词，不可数。