If my lawyer ______ here last Saturday, he ______ me from going.
| A．had been; would have prevented | B．had been; would prevent |
| C．were; would prevent | D．were; would have prevented |
The visiting minister expressed his satisfaction with the talk, ___ that he had enjoyed his stay here.
| A．having added | B．to add | C．adding | D．added |
The missing boys were last seen ___ near the river.
| A．playing | B．to be playing | C．play | D．to play |
If I ___ free tonight, I'll go to the cinema with you.
| A．an | B．was | C．will be | D．be |
When I handed the report to John, he said that George was the person ___.
| A．to send | B．to sending it | C．to send it to | D．for sending it to |
She can’t help___ the house because she’s busy making a cake.
| A．to clean | B．cleaning | C．cleaned | D．being cleaned |