In the new curriculum, some courses are , while others are optional for middle school students.
With the development of high technology, more and more new things ________ to the field of IT.
The dog was killed by the boss of this restaurant without _______.
The English play ______ my classmates acted at the get-together was really a great success.
The joke the naughty boy _______ his teacher made many people angry.
Is there any food? I am _________.