You can't imagine what great trouble I had _______ his address.
| A．to find | B．of finding |
| C．finding | D．about finding |
We all think Mr. Smith __________ a new house if more new houses __________.
| A．should be given; are built | B．will be given; will build |
| C．is given; will be built | D．should give; are built |
If better use is __________ of your spare time, you'll make great progress in your study.
| A．spent | B．taken |
| C．given | D．made |
English is difficult __________ well in a short time.
| A．to learn | B．learning |
| C．to be learned | D．learn |
Paul doesn't have to be made __________. He always works hard.
| A．learn | B．to learn |
| C．learned | D．learning |
The careless driver is __________ for the traffic accident that __________ yesterday.
| A．to blame; happened | B．to blame; was happened |
| C．to be blamed; was happened | D．to be blamed; happened |