A.
B.
C.
D.

A.
B.
C.
D.

A.
B.
C.
D.

A.
B.
C.
D.

A.Mặt Trăng với Trái Đất. 
B.Mặt Trăng với Mặt Trời.
C.Trái Đất với Mặt Trời.
D.Trái Đất với Mặt Trăng.

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