СрооочНооо пожалуйста

1). Выберите правильный вариант. Сhoose the correct variant: I can speak English.____?
A don’t I ?
B can I ?
C can’t I ?
D do I ?

2).Choose the one underlined word or phrase that is incorrect in standard written English:
During the entire hour three(1) deposition, the witness steadfastly(2) denied having(3) known the defendant previously(4).
A 1
B 4
C 3
D 2

3). Дополните предложение. Finish the sentence.
It’s two years since I saw your flat, ______?
A did I
B do you
C has it
D isn’t it