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
—What's the matter with Della?—Well，her parents wouldn't allow her to go to the party，but she still ________.
#89178
A
hopes to
B
hopes so
C
hopes not
D
hopes for
Maria is constantly making efforts, she deserves the goal of entering the key university.
#96095
A
achieving
B
to achieve
C
being achieved
D
to be achieve
Advertising is different from other forms of communication in that the advertiser pays for the message .
#92193
A
to deliver
B
having delivered
C
to be delivered
D
delivering
I think you should think twice .Once ______, the decision won’t be easily changed .
#90585
A
making
B
to be made
C
being made
D
made