Though ___________ to see us, the professor gave us a warm welcome.
| A．surprising | B．was surprised | C．surprised | D．being surprised |
The twins are so much alike that no one can ________one from the other.
| A．distinguish | B．separate | C．identify | D．recognize |
When I walked past the street, seeing the children playing happily, their happy laughter _______memories of my childhood.
| A．called in | B．called for | C．called on | D．called up |
This is a book, which I dare say, is unequaled ______translation practice is concerned.
| A．as much as | B．as well as | C．as far as | D．as long as |
By the time he was dying, he made a testament that he would______his kidney(肾) to those who were in need of it.
| A．contribute | B．donate | C．provide | D．introduce |
University is ______ most worthwhile time of discovery and learning, and it is also ______very enjoyable and valuable experience for every one of us.
| A．a；a | B．a；/ | C．/；a | D．a；he |