B) 用括号内所给单词的适当形式填空。
【小题1】There is going to be a ________ (graduate)ceremony next month.
【小题2】Miss Yang is a ________(care)teacher. She is popular with all students.
【小题3】He has put on ________(weigh)during the last two months.
【小题4】The ________ (discover)of Columbus was quite an event in the world.
【小题5】I think your joke may end up ________(be)not very funny.