高中英语现在完成进行时单选题

— Is the meeting held in Room 302 or 303 ?
— It should be 302. But I hear that it _____ till tomorrow.

A．was put off

B．will put off

C．has been put off

D．is put off

With the rapid growth of population, the city _____ in all directions in the past five years.

A．spreads

B．has spread

C．spread

D．had spread

- How long _____ at this job ?
- Since 1990.

A．	were you cmployed	B．	have you been employed
C．	had you been employed	D．	will you be employed