The sky is clouding over；we can see there ________ a rainstorm.
A．is going to be B．is going to have
C．will be D．will have
Close the door of fear behind you，and you ________ the door of faith open before you.(2012·湖南)
A．saw B．have seen
C．will see D．are seeing
—Ann is in hospital.
—Oh，really？I ________ know.I ________ go and visit her.
A．didn't；am going to B．don't；would
C．don't；will D．didn't；will
I ________ in London for many years，but I've never regretted my final decision to move back to China.
A．lived B．was living
C．have lived D．had lived
In 1492，Columbus ________ on one of the Bahama islands，but he mistook it for an island off India.
A．lands B．landed
C．has landed D．had landed
Excuse me.I ________ I was blocking your way.
A．didn't realize B．don't realize
C．haven't realized D．wasn't realizing
