John has really got the job because he showed me the official letter （ ） him it.
（A）offered
（B）offering
（C）to offer
（D）to be offered
The lecture, （ ） at 7:00 pm last night, was followed by an observation of the moon with telescopes.
（A）starting
（B）being started
（C）to start
（D）to be started
We’ve had a good start, but next, more work needs （ ） to achieve the final success.
（A）being done
（B）do
（C）to be done
（D）to do
