_____ all my teachers, Mr. Moore is the one who impresses me most.
| A．At | B．On | C．To | D．Of |
Only when .
| A．did he arrive the meeting began | B．he arrived did the meeting begin |
| C．did he arrive the meeting begin | D．he arrived the meeting began |
Then _______ we had been looking forward to.
| A．came the hour | B．the hour came |
| C．comes the hour | D．the hour is coming |
Little what you said. I wish you had repeated it!
| A．did I understand | B．I understood |
| C．I did understand | D．have I understood |
He has been to America twice, _____.
| A．so have I | B．so I have | C．I have so | D．so did I |
There must be ____ with the machine.
| A．something wrong serious | B．something seriously wrong |
| C．something serious wrong | D．something wrong seriously |