The split between humans and living apes is thought by some scholars ____ 15 to 20 million years ago.
#96013
A
to occur
B
occurring
C
to have occurred
D
having occurred
推荐题目
. Enough attention should be paid to _____ your pronunciation and intonation.
#97051
A
improve
B
improving
C
improved
D
be improve
_________ the deaf children, the young lady has little time to care for her own daughter.
#94433
A
Devoted to teach
B
Devoted herself to teach
C
Devoting herself to teaching
D
Devoting to teach
In college, Spring Break is usually associated with the beach, parties and sleepless nights,______ about relaxation and free time．
#95519
A
bring
B
brought
C
bringing
D
to bring
Please remain _______; the winner of the prize will be announced soon.
#90046
A
seating
B
seated
C
to seat
D
to be seated
______ their service, the workers of the hotel are active in learning English.
#91829
A
Improving
B
To improve
C
Improve
D
Having improved