The story took place in the 1920s, a time ________ jazz became popular in America.
| A．which | B．with which | C．when | D．among which |
It was because of the bad weather __________ the football match had to be put off.(推迟)
| A．so | B．so that | C．why | D．that |
It is the first time that I _______ this kind of moon cake.
| A．enjoyed | B．have enjoyed | C．enjoy | D．enjoying |
There was ______ time _____ Chinese used foreign oil.
| A．a; when | B．a; while | C．/; when | D．/; while |
While ___ along the street, I met an old friend of mine.
| A．I walking | B．was walking | C．I am walking | D．walking |
Your time should be made full use of ________ English well.
| A．learning | B．to learn | C．learn | D．to learning |