It is an irrevocable letter of credit which can not( )．
A: change
B: be changed
C: changing
D: changed
A: change
B: be changed
C: changing
D: changed
举一反三
- Water ____ into ice. A: will changed B: must be changed C: should change D: can be changed
- It is an irrevocable( )which can not be changed． A: letter of credit B: bill of lading C: quarantine D: quality
- The country life he liked______ greatly since 1992. A: change B: has changed C: changing D: have changed
- She regretted _________ this job. A: changes B: to change C: changing D: changed
- Computers and other machines have and will continue to change the way people do business and how we live. A: change B: changed C: changing D: been changed