Dan Brown , _____author of The Da Vinci Code，is _____very famous American writer.
A. a； the B. the； the C. the； a Da a； a
Restaurants in every corner of Tianjin not only provide job opportunities but ______ lots of taxes.
| A．result in | B．result from |
| C．bring up | D．bring in |
--- When did you last see your first teacher?
--- On ______ Friday last June, at ______ celebration of her 40th year of teaching.
| A．a; the | B．a; a | C．/; a | D．/; the |
Father made a promise ______ I passed the exam, he would buy me a PS4.
| A．if | B．that if | C．whether | D．that |
--- Alex came back home the day before yesterday.
--- Really? Where ______ at all?
| A．had he been | B．has he been | C．had he gone | D．has he gone |
The dangerous virus ______ in the next few weeks in the laboratory can cause fatal diseases.
| A．studying | B．studied |
| C．to study | D．to be studied |