—Where did you go _____ vacation? — I went to Hong Kong.A. for B. in C. on
Thanks _______ your help.
Her name is Mary Green. Mary is her _______ name.
---- Is this your pen?---- _________. It’s her pen.
-----Your bag is very nice.----___________.
当你称呼李老师(男)时,应如何称呼?__________.