ience of computer, rapid progress has been made in recent years，plays a very important role in our daily life．

He would have gone to visit Lindayesterday, however , he _____on by Linda instead.

I don’t understand how you got a ticketI always _____ you _____ a careful driver.

Students can ________ knowledge from teachers and books.

________ one and a half days enough for the painting to be finished?—I don’t think it’s enough and only after _________ go on with it.