摘要： to reach them on the phone, we sent an email instead． A．Fail B．Failed C．To fail D．Having failed
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________ to reach them on the phone, we sent an email instead．
[ ]
A．Fail
B．Failed
C．To fail
D．Having failed
________ to reach them on the phone, we sent an email instead．
[ ]
A．
Fail
B．
Failed
C．
To fail
D．
Having failed
________ to reach them on the phone, we sent an email instead．
[ ]
A．Fail
B．Failed
C．To fail
D．Having failed