19I don’t know why he blamed the accident _____ me

ething such as a product, an activity, or someone’s career _______, it suddenly becomes very successful.

It was not until dark ______ he found that itwas the correct way to solve the problem

How do you find the match between Spain and Switzerland?—It’s ！ Powerful Spain lost the game by 0∶1.

The boy is lying on the ground, _________at the aeroplane in the sky.