Having worked abroad for five years, he _________ much experience in dealing with international affairs.
| A．contributed | B．found | C．accumulated | D．collected |
It is beyond my understanding that many adults ______ be so crazy about Harry Potter series.
| A．shall | B．can | C．should | D．must |
Today, we’ll discuss a number of cases _______beginners of English fail to use the language properly.
| A．which | B．as | C．why | D．where |
You've failed to do what you _____ to and I'm afraid the teacher will blame you.
| A．will expect | B．expected |
| C．were expected | D．will be expected |
______ writing the article, Mrs. Curie even forgot her dinner.
| A．Absorbed in | B．Absorbing at |
| C．Being absorbed in | D．To absorb in |
---It seems that you are familiar with this city.
---I _____ English in a high school here for three years. It’s grerat to be back!
| A．have taught | B．taught |
| C．have been teaching | D．had taught |