16. I often have conversations with John on phone while keeping in touch with Tom by letter.
A. /; the B. /; a C. the; / D. a; a
17. I tried hard to get some information about the new technology out of his mouth, but he remained .
A. quiet B. still C. silent D. calm
18. American’s First Lady Michelle Obama said her dad was so proud to be sending his kids to college in spite of
hardship and that for her dad, that was ________ it meant to be a man.
A. what B. how C. why D. whether
