_____ seemed as if nobody knew anything about the matter.
| A．This | B．That | C．It | D．One |
Tu Youyou was ________ the 2011 Lasker clinical Medical Research Award on September 12 because she discovered a drug called artemisinin ________ against malaria.
| A．presented；using | B．presented；used |
| C．present；to use | D．presenting；used |
It's impossible for her to have more free time to accompany her parents because her work ______ much of their time.
| A．takes up | B．takes over | C．takes off | D．takes in |
She covered the 2,000 meters in 6 minutes, _______ second on the list of all the players.
| A．representing | B．taking | C．standing | D．ranking |
When you look for a job, it’s not your book knowledge but your experience _______matters more.
| A．whether | B．which | C．what | D．that |
Without proper lessons, you could _______ a lot of bad habits when playing the piano.
| A．give up | B．catch up | C．pick up | D．keep up |