日本成人片在线_久久免费精品视频_国产午夜精品久久久久久免费视_校花撩起jk露出白色内裤国产精品_av影片免费在线观看_国产小视频在线看_最新av免费在线观看_99久久99久久精品国产片_欧美成人猛片aaaaaaa_蜜桃免费网站一区二区三区

_______ is certain, people’s living conditions in China have improved a lot since the 1980s.

A. It                   B. As       C. what             D. Which

By serving others, a person focuses on someone other than himself or herself , _____ can be very eye-opening and rewarding

A. who           B. which             C. what       D. that

With the development of agriculture, the people _____ village I taught before have lived a happy life.

A. who           B. whose              C. in whose    D. in which

Yesterday he sold out all his stamps at _____ he thought was a reasonable price.

      A. that          B. which           C. what       D. as

The reason ______ he gave for not coming was ______ his mother wouldn’t allow him to.

      A. why ; that     B. for which ; that    C. why ; because   D. which; that

Have you asked her for the reason _______ may explain her absence from class last week?

     A. why                           B. that                      C. what                     D. for which

______ is expected, according to the online survey, is _______ prices of houses

   will not go up an more.

  A. What; that       B. As, that       C. It, what       D. Which, that

To my mind, she is the most wonderful teacher that I’ve ever known, _______ is able to get across to her students ______ she really thinks and means.

A. which; that        B. that; as        C. who; what      D. who; that

________one scientist has pointed out, children’s skulls are not fully developed.

A. That                 B. As                    C. Which               D. What

—The guard keeps         watch at the gate.

 —So he does. Only those         knows well could be let in.

A. close; who      B. tight; whom     C. tight; that        D. close; he