问题
A White House plane________ Beijing on March 19, 2014 and US First Lady Michelle Obamastartedher________ visit to China.
A:reached; seven days;
B:landed in; seven-day;
C:has arrived in; seven-day;
D:has got to; seven days;
B:landed in; seven-day;
C:has arrived in; seven-day;
D:has got to; seven days;
正确答案是：
