What _______ public is concerned about is whether medical workers and scientists will be able to find _______ cure for this new disease after the vaccine is tried on _______ volunteers.
| A．不填; 不填; 不填 | B．the; the; 不填 | C．the;不填; the | D．the; a; the |
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The Day of the Dead, an ancient Mexican festival, is not a sad
day, buttime to celebrate cycle of life.
| A．a；the | B．不填； the | C．不填；a | D．the； a |
Yellow Mountain is such an attractive place of interest everyone likes to visit.
| A．as | B．that | C．which | D．what |
blood if you can 
and many lives will be saved.
| A．Giving | B．Give | C．Given | D．To give |
Our bedrooms are all on the sixth floor, with its own bathroom.
| A．all | B．every | C．either | D．each |
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