题目内容
One of the requirements for a fire is that the material _____ to its burning temperature.
A. is heated B. will be heated C. be heated D. could be heated
C
hat引导的从句作requirements的同位语从句,因此要用虚拟语气,故选C。
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题目内容
One of the requirements for a fire is that the material _____ to its burning temperature.
A. is heated B. will be heated C. be heated D. could be heated
C
hat引导的从句作requirements的同位语从句,因此要用虚拟语气,故选C。