The experiment can’t have been completed in such a short time,＿＿＿？
| A．can it | B．was it |
| C．has it | D．is it |
The doctor telephoned to say that he couldn't __________ the meeting because he had to look after a patient.
| A．join | B．attend |
| C．join in | D．take part in |
More highways have been built in China, __________ it much easier for people to travel from one place to another.
| A．making | B．made |
| C．to make | D．having made |
—Do you know the tower __________ in the heart of the city?
—You mean the one __________ from the Ming Dynasty?
| A．locating; dated | B．being located; dating |
| C．located; dating | D．located; dated |
If we want to arrive at the village on time, we'd better __________.
| A．sweep up | B．speed up |
| C．call up | D．turn up |
Too many private cars got out and traveled __________ high speed, causing a lot of traffic accidents on the highway during the holidays.
| A．to | B．at |
| C．for | D．in |