从方框中选用合适的词，并用其适当形式填空。
please
thin
hear
excite
they
【小题1】An elephant has poor eyesight but good and smell.
【小题2】I went to HK for my holiday, and it was really a trip.
【小题3】Mother giant pandas often leave baby pandas for two whole days by .
【小题4】Swimming is not as as cycling.
【小题5】He is as tall as his brother, but his brother is much than he.hearing
网友回答
(答案→)hearing
解析：
【小题1】句意：大象有很差的视力，但是有很好的听力和嗅觉。结合语境可知填名词hearing，抽象名词不可数，用原形即可。
【小题2】联系前文去香港度假，可知是个不错的旅行。故填please的形容词形式，pleasant高兴地。
【小题3】句意：大熊猫妈妈经常让她的孩子自己整整呆两天，结合语境可知填反身代词themselves，他们自己。
【小题4】结合语境可知游泳不如齐脚踏车令人兴奋，故填形容词exciting，令人兴奋的。
【小题5】句意：他和他的哥哥一样高，但是他的哥哥比他瘦的多。故填thin的比较级thinner，注意以闭音节结尾的单词，此为辅音字母要双写，再加er。