A.I didn’t see my cousin ten years ago.
B.My cousin arrived ten years ago.
C.I haven’t seen my cousin for ten years.
D.I see my cousin once every ten years.

A.in
B.bringing
C.breakout
D.control

A.to reveal
B.some
C.fascinating
D.their

A.week
B.promises
C.preserve
D.social

A.week
B.promises
C.preserve
D.social

A.\({a^2} - {b^2} =  - 2\)
B.\({a^2} - {b^2} = 10\)
C.\({a^2} - {b^2} = 13\)
D.\({a^2} - {b^2} =  - 5\)

A.\(M\left( {0; - 1;1} \right)\)
B.\(Q\left( {\dfrac{1}{2}; - \dfrac{3}{2};0} \right)\)
C.\(P\left( {3; - 4; - 5} \right)\)
D.\(N\left( {\dfrac{3}{2}; - \dfrac{5}{2};2} \right)\)

A.\(\left( {0;3} \right)\)
B.\(\left( { - 1;3} \right)\)
C.\(\left( {1;2} \right)\)
D.\(\left( {0; + \infty } \right)\)

A.\(\dfrac{{{V_1}}}{{{V_2}}} = \dfrac{4}{9}\)
B.\(\dfrac{{{V_1}}}{{{V_2}}} = \dfrac{5}{{18}}\)
C.\(\dfrac{{{V_1}}}{{{V_2}}} = \dfrac{7}{9}\)
D.\(\dfrac{{{V_1}}}{{{V_2}}} = \dfrac{5}{9}\)

A.\(T = \dfrac{1}{{2021}}\)
B.\(T = 2021\)
C.\(T = 1\)
D.\(T = \dfrac{1}{{{{2021}^5}}}\)