Though I have often heard this song ______, I have never heard you ______ it.
#93922
A
being sung; sang
B
sang; singing
C
sung; sing
D
to be sung; to sing
推荐题目
 The club, _____ 25 years ago, is holding a party for past and present members.
#89411
A
founding
B
founded
C
being found
D
to have found
Mr. Li devoted all his life         English. Now he retired.
#95765
A
to teach
B
to teaching
C
to be taught
D
to have being taught
The experiment shows that proper amounts of exercise, if  __  regularly, can improve our health.
#97485
A
being carried out
B
carrying out
C
carried out
D
to carry out