Dina, ______ for months to find a job as a waitress, finally took a position at a local advertising agency.
A. struggling B struggled C. having struggled D. to struggle
I was 15 when I walked into MaCarley’s bookstore in Ashland and ________this interesting book.
| A．came about | B．came across | C．came out | D．came into |
_______ all the inventions have in common is _____they have succeeded.
A. What; what B. That; that C. What; that D That; what
The government has to close those small factories to prevent the water of the river ______.
| A．polluting | B．from polluting | C．being polluted | D．polluted |
He wants to see changes in the company and I am sure he will，______.
| A．on time | B．in time | C．at one time | D．at a time |
The traditional view is ____ we sleep because our brain is “programmed” to make us do so.
| A．when | B．why | C．whether | D．that |