In some cities the traffic police use computers to keep the traffic________smoothly.
A．being run B．run C．to run D．running
Last weekend Peter had a great deal of fun with his family________kites in a park.
A．fly B．flew C．to fly D．flying
It is no use________without doing.
A．to promise B．promising
C．promise D．to be promised
—Can't we go there on foot?
—________to take a boat.
A．I feel like B．We'd better
C．I'd prefer D．Yes，I'd like
David threatened________his neighbour to the police if the damages were not paid.
A．to be reported B．reporting
C．to report D．having reported
The old car needs__________，but I have no time to have it________.
A．to repair；repaired B．to be repaired；repairing
C．repairing；repaired D．being repaired；repaired
