87 .The finding of this study failed to ( 将人们的睡眠质量考虑在内) consider the quality of human’s sleep.

　　88 .The prevention and treatment of AIDS is (我们可以合作的领域) one field of our cooperation.

　　89. Because of the leg injury, the athelete (决定退出比赛) decided/decides to quit the match.

　　90 .To make donations or for more information, please (按以下地址和我们联系) contact us at the following address.

　　91 .Please come here at ten tomorrow morning (如果你方便的话) at your convenience.