On Sundays there were a lot of children playing in the park, _______ parents sat together joking.
| A．their | B．whose |
| C．which | D．that |
Whenever I go to Shanghai, _________ is quite frequent, I will visit my former teacher.
| A．which | B．where | C．it | D．as it |
It is fairly common in Africa for there ___________ a group of expert musicians surrounded by others who also join in the performances.
| A．being | B．to be | C．be | D．is |
There is a feeling in me _______ we will never know what a UFO is.
| A．that | B．which | C．of which | D．what |
Let us suppose that you are in position of parent. Would you allow your child to do such a thing?
| A．a; a | B．a; the | C．the; a | D．the; the |
She was so angry at all _________ he was doing ___________ she stayed up all night.
| A．that; that | B．that; which | C．what; that | D．what; as |