A. Huston B. Boston C. Baltimore D. Philadelphia
单项选择题U.S. presidents normally serve a(n)()term.
A. two-year B. four-year C. six-year D. eight-year
单项选择题()is the capital of Canada.
A.Vancouver B.Ottawa C.Montreal D.York
单项选择题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
单项选择题John's success has nothing to do with good luck. It is years of hard work()has made him what he is today.
A. why B. when C. which D. that
单项选择题This coastal area()a national wildlife reserve last year.
A. was named B. named C. is named D. names