_____ occurred to me that the murder happened ____ a rainy day.
| A．What; in | B．What; on | C．It; in | D．It; on |
The factory used 65 percent of the raw materials, the rest of which _____ saved for the other purpose.
| A．is | B．are | C．was | D．were |
--- The report is difficult to write.
--- You can surf the internet, where you can find _____ information and useful expressions.
| A．a lot | B．a good many | C．plenty of | D．a large number of |
The tourist industry has _______ a great number of different jobs.
| A．invented | B．developed | C．discovered | D．created |
There was no ______ that she was a good teacher.
| A．reason | B．fact | C．doubt | D．wonder |
—Mary’s score on the test is the highest in her class.
—Really? Shehave studied very hard.
| A．may | B．ought to | C．must | D．should |