Mr. Smith had taught for many years, and all the students him.
| A．looked up to | B．looked up | C．looked up and down | D．looked to |
The monument was built in honor of the explorer who was believed ________ the big river.
| A．to have discovered | B．to have been discovered |
| C．to discover | D．having been discovered |
After chatting on QQ a long time, Mary looked up, ________ that it was 11：00 pm, long past her usual bedtime.
| A．to see | B．saw |
| C．seeing | D．seen |
—What do you think of the two students ________ to take part in the competition?
—They are hardworking as well as intelligent.
| A．selecting | B．selected |
| C．having selected | D．to select |
A small plane crashed into a hillside five miles east of the city, ________ all four people on board.
| A．killed | B．to kill |
| C．kills | D．killing |
Our director is out. I'll have her ________ you on the matter when she's back.
| A．to contact | B．contacting |
| C．contact | D．contacted |