We first met on a train in 2010，but we both felt immediately that we ________ each other for years.
A．knew B．have known
C．had known D．know
—I'm sure Andrew will win the first prize in the final.
—I think so.He ________ for it for months.
A．is preparing B．was preparing
C．had been preparing D．has been preparing
I like these English songs and they ________ many times on the radio.
A．taught B．have taught
C．are taught D．have been taught
—Did you watch the basketball match yesterday?
—Yes，I did.You know，my brother ________ in the match.
A．is playing B．was playing
C．has played D．had played
—I'd like a pen which ________ well.
—Will this one ________？
A．writes；do B．writes；work
C．is written；do D．is written；work
I like getting up very early in summer.The morning air is so good ________.
A．to be breathed B．to breathe
C．breathing D．being breathed
