Earth is believed ______ by an object the size of Mars at some point in the distant past before its surface cooled．
#96481
A
to be hit
B
to have hit
C
to have been hit
D
to hit
推荐题目
It is _____to see a monkey _______the bicycle.
#90141
A
fun, be riding
B
a fun, riding
C
funny, rode
D
fun, riding
The wild flowers looked like a soft blanket _______the desert.
#95615
A
covering
B
covered
C
cover
D
to cover
It is a truth universally ______ that a single and rich man must be in want of a wife.
#91501
A
achnowledging
B
achnowledged
C
be achnowledged
D
to achnowledge
________to work overtime that evening, I missed a wonderful film.
#91840
A
Having been asked
B
To ask
C
Having asked
D
To be asked