________a certain doubt among the people as to the practical value of the project.

Though he often made his little sister ______, today he was made ______ by his little sister.

You are asked to attend the meeting ______ in the hall this weekend.

ndfather still plays tennis now and then, ________ he’s in his nineties.

下列各句横线处应填入的词语，最恰当的一组是 （ ）①为了适应干旱的环境，仙人掌最初的叶子如今已 成了针形。②大量的阅读使他获得了优良文化的 ，这种积累是他后来进步成长的土壤，也是他成为著名学者的条件。③随着科学的进步，我相信，宗教以及教条 迷信，必将让位于科学；可是人对于超越人世的渴望，必将由未来的哲学来满足。④可以说，中国学生群体网络生活方式的质量高低、文明与否，不仅影响到我国校园的网络文化建设， 会影响整个社会 国家的未来。