第二起事故涉及两辆汽车和一辆卡车。

The second accident ___involved two cars and a truck.

不把孩子父亲牵扯进安排中会很困难。

It would be difficult not to ___involve the child's father in the arrangements.

她写信告诉我，我们的朋友托德和爱丽丝在一场涉及吸尘器的奇怪事故中去世了。

She had written me to tell me that our friends Todd and Alice had died in a strange accident that ___involved a vacuum cleaner.