小题1:Why did you keep ________(沉默) at the

问题：

小题1:Why did you keep ________(沉默) at the meeting? We need your suggestions!

小题2:Kangkang’s father is going to Shanghai on _________. (出差)

小题3:The trees have a great _______ (影响) on the climate.

小题4: He has ________ (成功)in winning the first prize in the game recently.

小题5: This is my personal ________（经历）. What about yours?

小题6:There is no doubt that Diaoyu Island _________(属于)to China.

小题7:Thank you for ________(邀请) me to go on holiday with you.