There have been calls for a new kind of security _____________(arrange).
举一反三
- Security cameras have been _________ in the city center.
- The sales manager had a press conference ________ for their new products. A: arrange B: to arrange C: have arranged D: arranged
- We have bought a new computer.变被动语态：A new computer have been bought.
- I have been told that he ________ have a new apartment.
- This kind of cloth_______well and large quantities of the cloth ________. A: is sold; have been sold B: is sold; has been sold C: sells; have been sold D: sells ; has been sold