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
_______ the project, the young man has little time for entertainment.
#95186
A
Devoted to work on
B
Devoted himself to work on
C
Devoted to working on
D
Devoting to work on
I remembered _____ the door before I left the office, but forgot to turn off the lights.
#93451
A
locking
B
to lock
C
having locked
D
to have locked
The murderer stood before the policeman, his hands ________ on his back, trembling.
#98270
A
tie
B
tied
C
tying
D
to tie
The classroom with windows_____ north wants_______ badly, so we’d better move the students into the classroom next door.
#95457
A
facing; repaired
B
faces; repairing
C
faced; to be repaired
D
facing; repairing
People couldn’t help ______ the foolish girl.
#97555
A
laugh at
B
to laugh at
C
laughing at
D
laughing :