If the green light isn’t on, ___________ a minute.
A．wait B．waits C．will wait D．waiting
--- Jenny, ________do you visit your grandparents?
--- Twice a month.
A．How long B．How soon C．How often D．How many
---Do your two children live in Beijing with you?
--- _______. One is in Shanghai, the other is in Tianjin.
A．Each B．All C．Neither D．Both
— Is that Jack speaking?
—Sorry, he isn’t here. He ________the cinema with his aunt.
A．has gone to B．goes C．will go D．was going
Don’t put your hand out of the car window, ______ you will be hurt by the passing traffic.
A．but B．so C．and D．or
---Must I work out the problem right now?
---Yes, you _______. It’s very serious.
A．can B．must C．may D．should
