Many fans are always collecting a lot of information_____ with their favorite stars.

_______ a big party in our school in two weeks.

he bank of the river, we found him________ on a beach, with his eyes _____ on a kite in the sky

Though the aerospace industry has made greater progress in China, the scientists will not _________ themselves ___________ this status.

He had his camera ready ________ he sawsomething that would make a good picture.