one English grammer questionWithin the last year,astronomers have come closer than ever___.A.to deciding which of the questions is rightB.to decide which of the question is right C.deciding whether the question is right or notD.and decided which of the questions is right
问题描述：
one English grammer question
Within the last year,astronomers have come closer than ever___.
A.to deciding which of the questions is right
B.to decide which of the question is right
C.deciding whether the question is right or not
D.and decided which of the questions is right
答
B. Within the last year, astronomers have come closer than ever to decide which of the questions is right/correct.
在去年，天文学家更了解哪个问题是正确的。
答
选 A come close to是固定短语，to在这里是介词，不是动词不定时的标志，
look forward to+doing
devote...to+doing
be used to+doing
be addicted to+doing
答
A
come close to是固定短语,所以是介词,不是不定式.
介词后用现在分词.
答
选B。此题要用动词不定式