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.selectingB．selected
C．having selectedD．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 contactB．contacting
C．contactD．contacted
To answer a telephone call, the careless woman went out of the kitchen, ________ the soup ________ over the gas.
A．left; cook B．leaving; being cooked
C．leaving; cooking D．left; being cooked
