Вопрос по анлийскому)

6. Vincent … visit us the day after tomorrow.
a)willb) hasc) does
7. Has Ruby taken out the rubbish …?
a)yetb) sincec) just
8. We have never … to Berlin. Have you?
a)gob) wentc) been
9. They haven’t traveled abroad … 1998.
a)justb) forc) since
10. He will be free in half an hour.
a)Он свободен.
b)Он освободиться.
c)Он занят.