【C3】A．toughlyB．tightlyC．firmlyD．securely

【C17】A．recentlyB．alreadyC．firmlyD．long

【32】A．consentB．insuranceC．admissionD．security

Why do you have to ______ adhere to such out－dated ideas？A．harshlyB．tightlyC．bitterlyD．rig

Some bosses keep all important matters______in their own hands.A．instantlyB．tightlyC．close

What did FBI use as an investigative tool?A.National Security Bills.B.National Security Le

Which three security concerns can be addressed by a tunnel mode IPsec VPN secured by ESP?() (Choose three.)