Though ______, many laws of nature exist.
#97974
A
not having been discovered
B
having not been discovered
C
not having discovered
D
having not discovered
推荐题目
Tom asked the candy makers if they could make the chocolate easier into small pieces.
#90765
A
break
B
breaking
C
broken
D
to break
A small plane crashed into a hillside five miles east of the city, _______ all four people on board.
#91692
A
killed
B
to kill
C
kills
D
killing
This is the best way they have thought of _____the ______miners.
#97208
A
rescuing;burying
B
to rescue;buried
C
to rescue;burying
D
rescuing;buried
The joke told by Tom made us _____, so the teacher couldn’t make himself _____.
#98105
A
to laugh; hearing
B
laughing; heard
C
laughing; hear
D
laughed; heard
He turned on the channel, only ____that the football match between China and Iraq was over.
#91345
A
finding
B
to find
C
having found
D
to be found