–I am going to spend my summer vacation with my parents in Singapore. --__________. And remember to send me a postcard. A. It’s a pleasure B. Have a nice time C. That’s all right.
–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