【C19】A．complementB．implementC．designD．introduce

It was obvious that the accident happened ______ .A．on designB．with purposeC．by designD．by

【C11】A．namedB．madeC．calledD．introduced

The speakers aim is to______.A．introduce students to the academic requirementsB．introduce

【C4】A．recommendB．implementC．imposeD．renovate

【C6】A．intrudeB．induceC．includeD．introduce

A．resortedB．relievedC．exiledD．introduced