Mistakes don't just happen; they occur for a reason. Find out the reason, and then making the mistake
becomes ______.

The former focuses on the natural world; the________starts with human beings and studies how
human being and their environment act upon each other.

Look, dark clouds are gathering.It is________to rain soon.

The Columbia has finished the task in the International Space Station and is reported to come back
to the earth tomorrow, or to be more________, at 3: 32 p. m.local time.

—Why was Jackson searching shop after shop for a sweater?  
—Oh, he was very __________ about his clothes.  

The problem of poverty is particularly ________ in rural(乡村的)areas.

Every ________ space on the wall was covered with graffiti(涂鸦), so it didn't look beautiful.

A new ___ bus service to Tianjin Airport started to operate two months ago.

Most of the children can work out the  problem, so it should be quite _____ to adults.  

I can't catch you. Please explain it in ________ English.