After describing the planned improvements， she went on _____ how much they would cost.
#98758
A
to explain
B
explaining
C
to be explaining
D
having explained
推荐题目
__________ her way through the excited crowd in the bookstore, the woman writer is surrounded by a group of admirers.
#92646
A
To make
B
Having made
C
To be made
D
Making
In this victory speech ________ before a huge crowd of his supporters, Obama declared that “Change has come to America”.
#89623
A
delivered
B
to be delivered
C
having delivered
D
delivering
Most computer users think it necessary for their software ________ regularly．
#89719
A
to up date
B
to be updated
C
to have been up dated
D
to have updated
The DiaoYu Island have been part of China’s territory since ancient times, __________as important fishing grounds of Taiwan.
#91612
A
served
B
serving
C
to serve
D
having served