.It is the first time the students ________ to Hyde Park.
| A．have gone | B．have been gone |
| C．had gone | D．had been gone |
I __________the poor rabbit, but I didn’t have the right drugs with me at that moment.
| A．could save | B．had saved | C．could have saved | D．saved |
Great changes have taken place in that school. It is no longer ______ it was 20 years ago, _____ it was so poorly equipped.
| A．what; when | B．that; which | C．what; which | D．which; that |
With the development of science, more new technologyto the field of IT.
| A．has introduced | B．is being introduced |
| C．is introduced | D．was introduced |
--How can I wake up so early, Jack?
--Set the alarm at 5 o’clock you’ll make it.
| A．but | B．or | C．and | D．so |
______ the ancient Egyptians built the pyramids puzzled people for centuries.
| A．Whether | B．What | C．How | D．Where |