(届陕西省五校联盟高三第二次模拟考试英语试卷)Be careful when you deal with this chemical, as it will explode when ______ to sunlight.
_______ in thought, he almost ran into the car in front of him.
Paul doesn’t have to be made _______. He always works hard.
The boy wanted to ride his bicycle in the street, but his mother told him _______.
We agreed _______ here but so far she hasn’t turned up yet.
—You were brave enough to raise objection at the meeting. —Well, now I regret _______ that.