I don’t know who invented __________ telescope, but I think it is __________ most
useful invention.
| A．the, the | B．the, a | C．a, the | D．a, a |
_________ the internet is _________, I do not think it is a good idea to spend too much time on it.
| A．When ; helpful | B．As ; great help |
| C．While ; of great help | D．Now ; of no help |
Jack Ma(Ma Yun), CEO of ALIBABA.COM，first touched a computer in 1995, _______ he visited a friend living in Seattle.
A. where B. when C. on which D. that
.The poor condition of the Acropolis set the Greek government ______into consideration the preservation of it.
| A．taking | B．taken | C．to take | D．to be taken |
.He had a bad week. He lost his job, ________ ,his car was stolen.
| A．on top of that | B．on top of it |
| C．and on top of which | D．on top of which |
— Ring me at six tomorrow morning, will you?
— Why that early? I ______ .
| A．will be sleeping | B．have slept |
| C．have been sleeping | D．will sleep |