【C7】A．investigatedB．questionedC．raisedD．asked

【C7】A．atB．toC．forD．over

【C7】A．ensureB．approveC．supplyD．deliver

【C7】A．adviceB．adviseC．advocateD．advance

Many a problem has ______ because of poor planning.A．arisenB．risenC．raisedD．aroused

【C8】A．doubtedB．questionedC．inquiredD．suspected

We ____the candidates on by one.A、checkedB、questionedC、interviewedD、investigated