It’s quite _____ of beginners to forget to use an article before a noun.

Seeing the bad results of the exams, she was rather upset and felt _____ about her future.

A person ________ with H7N9 viruses will be more likely to die of lung dysfunction.

   —How many people attended the exhibition?—I’m not sure. _____ speaking, a thousand or more.

The dress is not ______ for the formal party. You’d better find another one.