A．toB．inC．onD．for

Last week John applied to that famous company（) a demanding job.A toB inC ofD for

The policemen were told to be alert（) the dangers they were facing.A toB inC onD at

Computers can be designed ______ many automation processes purposes.A．toB．inC．onD．for

Everything we do has the potential creating some bad.A、toB、inC、for

【C7】A．toB．inC．onD．toward

The first group was given five doses______weekly intervals.A．atB．inC．onD．for