_______ entering the classroom, remember to take your seat and turn off your cell phone.
--- I hear that Jason is planning to buy a new car. --- I know. By next month, he ________ enough for a used one.
--- What on earth are the police busy with? --- They have been investigating how the train crash __________.
--- It’s a shame that you missedthe lecture on the British culture given by Thompson. --- I _________ it, but I was busy preparing the coming exam.
Readers are required to _________ the rules of the library and mind their manners.
She would move quietly up to the sparrow on a small tree just to get a better look, her face __________ with childlike expressions at one of God’s simple wonders.