下列句子中，没有语病的一项是 （3分）

Why do you look so worried- My MacBook Pro broke down and mypaper______unfinished since

Plenty of latest news and information are often covered live on CCTV-1.— That’s true. ________important news channel CCTV-1 is!

下列句子中，加点的成语使用恰当的一项是 ( ）

Tim used to be shy, didn’t he– _______. He was afraid to give a speech in front of the class.