It is reported that two cars ____ into each other this morning on the highway...

所属学校：科目: 2017-03-30 16:55:56

It is reported that two cars ____ into each other this morning on the highway, killing both drivers and two passengers.
A. smashed
B. cracked
C. pressed
D. crashed
   满分：2  分
2.  Last weekend Mary ( ) her mother in the kitchen.
A. helps
B. helped
C. helping
   满分：2  分