Ⅰ.单句填空
1.I only smoke an cigar;that is,I only smoke a cigar .(occasion)
2.Nowadays most of the food we eat (process) in some way.
3.Mrs.Smith,who is a (retire) teacher,does volunteer work at the hospital.
4. her great joy,she became the mother of two beautiful baby girls.
5.No one can go into my room without my (admit).
6.I decide to make more efforts (improve) my English.
7.Detectives are so far at loss to explain the reason for his death.
8.The parking place for bikes has been an (exist) problem for a long time in our school.
9. Spring Festival Eve,all my family members often watch the Spring Festival Gala together.
10.He admitted (take) some cash from the drawer.