—Peter,_______ do you visit your grandparents?
—Twice a month.
| A．how long | B．how soon | C．how far | D．how often |
相关试题
It’s reported that a terrible rainstorm hit _______ south of our country.
| A．a | B．the | C．/ | D．an |
–Whose shirt is this?
--It _______ be Li Lei’s. It is too big for him.
| A．could | B．must | C．can’t | D．might |
I saw many ____________ eating grass on the hill.
| A．horse | B．cow | C．rabbit | D．sheep |
—By the way, have you got ______ e-mail address?
—Oh, yes, it is swimonland @ hotmail.com.
| A．a | B．an | C．the | D．/ |
means______. 
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