I was supposed to _______ all my shopping by now, but I still have a great many to buy.
| A．to have finished | B．to finish |
| C．to be finishing | D．to have been finished |
He’s ____ working in Germany as a representative of a Chinese company.
| A．at once | B．at a time | C．at present | D．on time |
The scientists are now trying to discover what use could be ____ such material.
| A．made out | B．made up | C．made of | D．made from |
This tree looks high and strong but ____ its trunk is hollow.
| A．really | B．truly | C．actually | D．surely |
—Smoking is bad for your health.
— Yes, I know. But I simply can’t ____.
| A．give it up | B．give it in | C．give it out | D．give it away |
– Do you know the West Lake in Hangzhou?
– Yes, this is the third time that I ____ this beautiful city.
| A．visit | B．visited | C．have visited | D．had visited |