If better use is _____ your spare time, you’ll make greater progress in that.
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.