There wastimethis kind of skirt was very popular.A. a; thatB. a; whenC. the; that D. the;

问题补充：

There wastimethis kind of skirt was very popular.

A. a; that

B. a; when

C. the; that

D. the; when

答案：

A. a; that

B. a; when

C. the; that

D. the; when

解析：time在此处是时代的意思,泛指任何一个时代,且为可数名词，故用不定冠词a,根据前置词time,可知从句引导词应用when……的时候,故选B.曾经有一段时间这种裙子非常流行。