答案是：
✘ I'll meet you at tonight.
✘ John is not only lovely and humorous too.
✓ John is not only lovely but humorous too.

Not only...but (also)...是常見的英文句式，意思是「不但……而且……」，說明事物擁有的兩種特徵。如果句子用and連接，則不需用not only。