A.\(1\)
B.\(2\) 
C.\(3\)
D.\(4\)

A.\(x = 2\)
B.\(x =  - 2\) và \(x = 2\)
C.\(x =  - 2\)
D.\(x = 0\)

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

A.\(3\)
B.\(1\) 
C.\(4\) 
D.\(2\)

A.\(A_9^2\)
B.\(C_9^2\)
C.\({2^9}\)
D.\({9^2}\)

A.No sooner had he approached the house than the policeman stopped him.
B.Hardly had he approached the house than the policeman stopped him.
C.Had he not approached the house, the policeman would have stopped him.
D.Before he approached the house, the policeman had stopped him.

A.If only Marie turn up at John’s birthday party.
B.I wish Marie had turned up at John’s birthday party.
C.I wished Marie wouldn’t turn up at John’s birthday party.
D.It’s a shame Marie had turned up at John’s birthday party.

A.If only Marie turn up at John’s birthday party.
B.I wish Marie had turned up at John’s birthday party.
C.I wished Marie wouldn’t turn up at John’s birthday party.
D.It’s a shame Marie had turned up at John’s birthday party.

A.Apples are not as good as people may think.
B.Eating an apple in the morning proves beneficial.
C.Pectin can cause digestive problems at night.
D.Flavonoids are as good as beta carotene.

A.
B.
C.
D.