_________ in Current Biology, the finding suggests that female birds seek mates with superior singing skills.
| A．To publish | B．Published |
| C．Having published | D．To be published |
—Who came out______first in the London Marathon?
—Michael.He’s always______first to reach the line.
| A．the;the | B．/；/ | C．the;/ | D．/;the |
Johnson had made up his mind to give it up，but on______second thought he determined to try______ third time.
| A．/；a | B．/；/ | C．a；a | D．the；a |
Quickly!Tom，give me ______pen to mark the page.I see______under the book.
| A．/；it | B．a;that | C．the;one | D．a;one |
Some of the passengers told the reporters about their_____in the burning train.
| A．details | B．trips | C．events | D．experiences |
You have missed your______.You have to queue up there and wait for the next round.
| A．chance | B．turn | C．line | D．time |