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
She was the first woman ______ to the board.
#94213
A
to be appointed
B
having been appointed
C
appointing
D
to appoint
They have rich and beautiful forests _____ in the south of the country.
#97367
A
grown
B
growing
C
planted
D
planting
I just couldn't understand the former mayor _____ the money raised for children in poor areas.
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A
taking
B
to take
C
being taken
D
to be taken
It is no use _________ to persuade him ________ smoking because he has been addicted to it since he was young.
#95554
A
trying, to quit
B
to try, to quit
C
to try, quit
D
trying, quit
______ which school was suitable for their son, the parents visited lots of different primary schools in the city.
#88918
A
To find
B
Being found
C
Found
D
Finding