（1）Alex is a brave boy and he never _______（hesitation）to ask any kinds of questions.But his questions are so ________(confusion)that sometimes even the teachers cannot answer them.
(2)Eye contact is _______（consideration）as an important part of communication.
(3)Wendy's _______（apply）for employment of the big company was rejected（拒绝）.
(4)I've never thought that the silk _________（sell）so well eapecially in the West.
(5)Many buildings ________(pull)down recently.
(6)--Oh,it's you!I________(not recognize)you.--I_______(have)just my hair colored,and I________(collect)more than 2000 stamps.