—May I smoke here?—If you ________， choose a seat in the smoking section.

(2013·湖北高考)While intelligent people can often ________ the complex, a fool is more likely to complicate the simple.

(2013·浙江高考)When the group discussion is nearing its end, make sure to ________ it with important points.

Would you like to     with us to the film tonight?

. Don’t leave the window open—it’s ________ thieves to enter.