How can we protect ourselves ________ the earthquake —We should stay calm first.

His idea is always so advanced that we allthink that he is____ our time.

.A computer is so useful a machine ________ we can use everywhere

It was on January, 12th, 2010 __________ a terrible earthquake struck the capital of HaiDi.

unds very much ______________in the job, but I’m not sure whether he can manage it.