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【題目】這枚郵票價值可觀，值得收藏。

The stamp is of __________________________________________________ collecting.

【答案】such great value/ that it is worth

【解析】

短語be of great value：很有價值；be worth doing sth.：值得做某事。such+形容詞+不可數名詞+that+從句：如此……以至于……。value：價值，不可數名詞，be of such great value：如此大的價值，價值可觀。本句主句時態(tài)是一般現在時，可知從句時態(tài)是一般現在時。主語it(指代上文的那張郵票)三單，可知be動詞使用is。故答案為such great value/ that it is worth。

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