A.My mother last cooked chicken soup for one week.
B.My mother hadn't cooked chicken soup since last week.
C.My mother hasn't cooked chicken soup since last week.
D.My mother didn't cook chicken soup one week

A.My mother last cooked chicken soup for one week.
B.My mother hadn't cooked chicken soup since last week.
C.My mother hasn't cooked chicken soup since last week.
D.My mother didn't cook chicken soup one week

A.are produced
B.discreet
C.signal
D.Speech

A.The domination of business languages for some parts of the world.
B.The trend of young generation in choosing a second language.
C.The reasons for the decrease in the number of local languages speakers.
D.The comparison of national languages in the past and the modern world.

A.restrictions
B.surplus
C.depressions
D.crises

A.opportunities
B.products
C.possibilities
D.procedures

A.The government does not appreciate the importance of minority languages.
B.People who are not in the government will be allowed to speak their local languages.
C.The local people will be neglected at work if they use their ancestors' languages.
D.It's better to allow these minority languages to die naturally by neglecting them.

A.resources
B.Ph.D. students
C.minority languages
D.language skills

A.They have to be under the pressure that the language is admitted to be extinct for good.
B.These students are unable to convince people to use the language they are learning.
C.They encounter several obstacles in understanding the language with the interpreters.
D.Their qualified research is unlikely to accomplish due to the local people's ignorance.

A.Lack of language resources has a negative effect on the quality of Ph.D. students' research.
B.Local languages can't bring as many future education opportunities as national languages.
C.State education must ensure that young people speak and work in their regional languages.
D.Each citizen has their right to decide whether they want to speak a minority language or not.