精品一区二区免费在线观看_国产精品久久久久久av福利软件_97成人精品区在线播放_国内成人精品一区

4. The conference ________ a full week by the time it ends.

  A) must have lasted                 B) would have lasted

  C) will have lasted                  D) has lasted

48.The conference ________ a full week by the time it ends.

The conference ________ a full week by the time it ends.

A. must have lasted　　　　　　　　　　　　　　　　   B. will have lasted

C. would last　　　　　　　　　　　　　　　　　　 D. has lasted

A. must have lasted　　　　　　　　　　　　　　　　   B. will have lasted

C. would last　　　　　　　　　　　　　　　　　　 D. has lasted

The conference ________ a full week by the time it ends.

[　　]

The conference ________ a full week by the time it ends.

[　　]