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sat语法题The Sun has been shining for 【nearly (A)】 five billion

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sat语法题
The Sun has been shining for 【nearly (A)】 five billion years and is thought 【that it has (B)】 sufficient thermonuclear fuel in its core 【to shine (C)】【 for about (D)】 another billion.No error (E)
请问这句选择B是不是因为thought 后面应该是虚拟语句所以用to have?
sat语法题The Sun has been shining for 【nearly (A)】 five billion
不是虚拟语气,be thought to do 被认为 相关短语:be thought to be被认为是
be thought to have done被认为已经……
be thought to do sth被认为
be thought to represent things被认为代表一些东西
is thought to be被认为是
不是虚拟语气,这是 be thought to 的用法,被认为…….相关短语
be thought to be 被认为是……;be thought to have done 被认为已经……