—I saw Mr.White in his office just now.
—No,it ______ be him.He has ______ Beijing and will come back next Friday.
A.mustn't;gone to B.can't;gone to C.can't;been to
—I saw Mr.White in his office just now.
—No,it ______ be him.He has ______ Beijing and will come back next Friday.
A.mustn't;gone to B.can't;gone to C.can't;been to
B