Bộ 10 đề ôn thi học sinh giỏi Tiếng anh lớp 9 có đáp án (Đề 4)
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to more than 400 degrees centigrade (85) ………………….. that it melts. It is then cooled, producing a waxy substance that can be used to make new plastic products, including computer hardware.

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to more than 400 degrees centigrade (85) ………………….. that it melts. It is then cooled, producing a waxy substance that can be used to make new plastic products, including computer hardware.

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to more than 400 degrees centigrade (85) so that it melts. It is then cooled, producing a waxy substance that can be used to make new plastic products, including computer hardware.