第1题：
A. have been working out
B. have been working
C. have been working on
D. have been building on
第2题：
Many scientists have been probing psychological problems.
A．solving
B．exploring
C．settling
D．handling
第3题：
(A) were being told
(B) have told
(C) have been told
(D) told
正确答案：C
解答参考：在本句中，首先主语children和谓语tell是被动关系，所以排除B和D。而选项A是被动语态的过去进行时形式，句中many times表示该动作多次发生，所以用现在完成时。【译文】多次告知孩子们不要走近湖边。
第4题：
A、have had worked
B、have been working
C、are working
D、work
第5题：
48) I have excluded him because, while his accomplishments may contribute to the solution of moral problems, he has not been charged with the task of approaching any but the factual aspects of those problems.
第6题：
A.when
B.where
C.that
D.which
第7题：
Have you ________ Japan? Yes ,many times
A.been to
B.gone to
C.arrive at
D.reach
第8题：
A.to make
B.to have been made
C.to have made
D.to be making
第9题：
Have you ever been to the place? You can see many places of interest there．（合并为一句）
Have you ever been to the place ________you can see many places of interest?
第10题：
A.have been proved
B.have proved
C.has proved
D.has been proved