二、单项选择．
( )1．Mr Li ________Britain several times．Tomorrow he will give us a talk about British culture．
A．has gone to B．have gone to C．has been to D．have been to
( )2．I haven’t seen her_________she left Shanghai．
A．while B．when C．since D．from
( )3．一Do you know him well?
—Sure．We________friends since ten years ago．
A．were B．have been C．have become D．have made
( )4．一_______you ________there? 一No，never．
A．Have；been B．Have；gone C．Have；been to D．Have：gone to
