According to recent reports, one of the rare animals, _____ crocodile, will be in danger of dying out in _____ 2020s.
It is reported that many a new house ______ at present in the disaster area.
------ I don’t think he is fit for the job, ______? ------Why do you think so ?
______ is of great importance now , my teacher often reminds me ,is study.
Although he was in poor health , Robert succeeded ______ other more famous engineers failed.
Even if the treatment _____, there’s still no magic pill for patients in the late stage of AIDS.