—David has made great progress recently. —_____, and _____. Keep up the good work, Tom. A. So he has; so you have B. So he has; so have you C. So has he; so have you
–Where is your father, Ted?
-He _______ Shanghai on business. He ________ there many times.
A. has gone to, has gone to
B. has gone to, has been
C. has been to, has been to