On Sundays there were a lot of children playing in the park, _______ parents were sitting together joking.
| A．their | B．whose | C．which | D．that |
I can make you __________ what I say, but you can't make yourself __________ in English.
| A．understand; understand | B．understand; understood |
| C．to understand; understand | D．understand; to be understood |
The doctor asked him not to leave his wound __________.
| A．expose | B．exposed | C．to expose | D．exposing |
The TV play was so fascinating that the children kept their eyes __________ on the screen.
| A．to fix | B．fixing | C．fixed | D．being fixed |
With nothing __________ to burn, the fire became weak and finally died out.
| A．leaving | B．left | C．leave | D．to leave |
He is very popular among his students as he always tries to make them __________ in his lectures.
| A．interested | B．interesting | C．interest | D．to interest |