问题

Two explosions near the finish line of the Boston Marathon killed at least 3 people and injured more than 180 others, and currently FBI has figured out how it __________.
A:came up
B:came out
C:came across
D:came about
B:came out
C:came across
D:came about
正确答案是:
同类题型
“We can hardly wait to see him” has same meaning as _________.
In 1942, Columbus and his crew arrived ________ was so-called the New World by the westerners.
My teachers try their best ______ our problems.
It _____ my daughter half an hour _______ her homework last night.
What do you think of Joe—He is ________ honest boy. He can play ________violin very well.