【C9】A．soB．untilC．lestD．although

【C9】A．soB．whenC．asD．whereas

A．betweenB．untilC．fromD．for

【C6】A．ifB．untilC．whenD．though

【C2】A．IfB．UntilC．DespiteD．Unless

He was warned______he should make the same mistake again.A．ifB．givenC．lestD．unless

【C7】A．beforeB．untilC．afterD．since