168. Whenever I met him, _____ was fairly frequent, _____ I liked his sweet and hopeful smile.
| A．that; that | B．which; / | C．it; that | D．it; so |
--- I can’t find Xiao Ping. Where did you see him this morning?
--- In the reading room _________ he often studies in.
| A．that | B．where | C．in which | D．the one |
I regret _________ going on a holiday to France because of the bad weather last week.
| A．having given up | B．to give up |
| C．having given back | D．to give back |
All __________ can be done has been done.
| A．which | B．that | C．/ | D．what |
--- What do you think of the film Schindler’s List?
--- This is the best film _______ I have ever seen.
| A．that | B．what | C．who | D．whom |
I saw the beautiful garden _________ owner was an old man.
| A．whose | B．its | C．who | D．that |