One of the requirements for a fire is that the material ______ to its burning temperature.
A、were heated
B、must be heated
C、is heated
D、be heated
【正确答案】:D
【题目解析】:requirement引导的从句要用should/would+动词原形。
One of the requirements for a fire is that the material ______ t
- 2024-09-16 17:55:17
- 英语(专升本)(z0009)