the period of recent terroristactivities, people _____ not to touch an unattended bag．

下列“之”字的用法与例句相同的一项是 例句：后之视今，亦犹今之视昔

It is weeks since he ___—So it isWe’d better ask some one else to help us

The of this illness in the area is of concern to all doctors.

You have made a few spelling mistakes in your composition, but ________, it is fairly good.[ ]