— Did you know any Chinese before you arrived in Beijing?
—Never ________ it, actually．
A．had I learned B．have I learned
C．I have learned D．I had learned
My pen friend and I keep in touch ________ sending e-mails often．
A．with B．by C．on D．of
—Thanks for your help, but can you do me one more favor, please?
—________, Sir．What’s it then?
A．Just a minute B．My pleasure
C．That’s right D．At your service
He ________ comb his hair at the table, even though he knows I don’t like it．
A．shall B．may C．will D．can
Dear me! Just _________ at the time! I _________ no idea it was so late．
A．look, have B．looking, had
C．look, had D．looking, have
Some of the exercises appear to be ________ ones that you have done, but after taking ________ second look, you will find that they are different．
A．不填; the B．the; the C．the; a D．the; 不填
