21.The doctor couldn’t answer the question _____ the patient could survive that night.
—How do you find the cards I’ve collected recently? —Very nice, especially ________bearing the signature of Liu Xiang.
On the flight to Chongqing, the memory of my childhood, _______ I was my father’s shadow, came flooding back.
.—Alice, you look puzzled.Haven’t you understood it? —Yes.I _of another problem just now.
.—I can’t imagine Phelps was caught smoking on campus! —_______.
By looking at a problem in as many ways as possible, creative thinkers can find solutions that would _______ remain invisible.