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
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, he dialed 999.
#89716
A
Seen the house on fire
B
To see the house on fire
C
Being seen the house on fire
D
Seeing the house on fire
_____ to sunlight for too much time will do harm to one’s skin.
#92287
A
Exposed
B
Having exposed
C
Being exposed
D
to expose
_______ in the war, many children have become orphans(孤儿).
#95733
A
Their parents were killed
B
Being killed
C
Their parents killed
D
Killed
The picture shows my mother is sitting by my bed, ______ me stories till I fell asleep.
#89786
A
having told
B
telling
C
told
D
to tell