You can't use the machine because it ___ yet.
A: has not tested
B: has not been test
C: has not been tested
A: has not tested
B: has not been test
C: has not been tested
举一反三
- You can’t use the machine because it __________________ (not test) yet. A: has not been tested B: was tested C: has tested
- You can't use the machine because it hasn't been _____(test) yet.
- Why is the man concerned A: The launch has been delayed. B: The trial is not finished. C: The item has not been tested yet. D: The product might be unpopular.
- You can’t use the machine because it __________________ (not test) yet.
- is an aircraft that has not yet been fully proven in flight. Often, this implies that new aerospace technologies are being tested on the aircraft.