Peter ________ at this job since he graduated from college.
— Who dares to go ? How about you ? — Sorry , I ____ .
It''s nearly seven o''clock . Jack ____ . be here at any moment .
Johny , you ____ play with the knife , you ____ hurt yourself .
— ____ he be at home now ? — No . he ____ not . He ____ be in his office . He often goes home from work at almost twelve .
You had better not keep the window open , ____ ?