【C2】A．only ifB．much asC．long beforeD．ever since

Society is now much more diverse than ever before.A．colorfulB．attractiveC．flexibleD．varied

Society is now much more diverse than ever before.A．colorfulB．attractiveC．flexibleD．varied

【C2】A．WhenB．AsC．WhileD．Since

【C2】A．WhileB．As soon asC．MeantimeD．Before

【C2】A．ifB．whenC．althoughD．since

【C2】A．WhileB．AsC．SinceD．Unless