There have been many（）in their marriage but they still love each other.
第1题：
A.to make
B.to have been made
C.to have made
D.to be making
第2题：
A.when
B.where
C.that
D.which
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：
Many modern critics of American literature have called Mark Twain, born Samuel Clemens, ______.
A. as America's greatest writer
B. was America's greatest writer
C. America's greatest writer
D. to have been America's greatest writer
第5题：
Many scientists have been probing psychological problems.
A．solving
B．exploring
C．settling
D．handling
第6题：
A. which
B. that
C. this
D. that
第7题：
32 jack descried his father, who _____a brave boy many years ago, as a strong-wiled man
A. would be
B. would have been
C. must be
D. must have been
第8题：
A.thought
B.impression
C.concept
D.notion
第9题：
Have you ________ Japan? Yes ,many times
A.been to
B.gone to
C.arrive at
D.reach
第10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?