1 . It was so quiet in the classroom that the sound of a needle in the ground could be heard.
仿写：那幅画逼真得像真实的景象。（运用so…that…或such…that…）
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2 . His cold ________ ________ ________ ________ he had a frog in his throat
他的感冒如此重以致于他喉咙痛说话困难。(结果状语从句)