Earth is believed ______ by an object the size of Mars at some point in the distant past before itssurface cooled.
#88257
A
to be hit
B
to have hit
C
to have been hit
D
to hit
推荐题目
The science of the library is sometimes broken by a sudden cough or the sound of pages _______.
#88526
A
turning
B
turned
C
being turned
D
having turned
(2013·山东省胶东示范学校二模)More children in Beijing will reach school age next year, ________ a shortage of primary school teachers in the capital.
#89068
A
create
B
to create
C
creating
D
created
It rained heavily in the south, serious flooding in several provinces.\
#92083
A
caused
B
having caused
C
causing
D
to cause
After the teacher called him into the office, the boy admitted _______ in the test.
#89676
A
to cheat
B
cheated
C
cheat
D
cheating