—Boy students, could you come downstairs to help me carry those books?
— OK, Miss Liu. We ______.
| A．come | B．came |
| C．have come | D．are coming |
_________ last term we had finished our experiments.
| A．At the end of | B．By the end of |
| C．In the end of | D．At an end |
It's surprising that your brother __________ Russian so quickly-he hasn't lived there very long.
A. picked upB. looked up
C put on D.made up
“It’s such a nice place.” Mother said as she sat at the table __________ for customers.
| A．to be reserved | B．having reserved |
| C．reserving | D．reserved |
-Why does the water smell terrible?
-Because large quantities of water __________.
| A．is being polluted | B．have been polluted |
| C．is polluted | D．has been polluted |
I don't think it __________ to stay up late in the night and sleep until midday the next day.
| A．makes a difference | B．makes good sense |
| C．makes trouble | D．makes profit |