They will arrive our city April 20th. [ ]
A. in in
B. at at
C. in on
D. at on
答案:D
The doctor told him _____ more water. [ ]
A. drink
B. to drink
C. drank
D. drinking
食品安全小组成员应该是()。
A、技术部门人员
B、质量部门人员
C、管理人员
D、具有资质的人员。