His failing in the exam _____us because he was al­ways an outstanding student.

Liu Huan, a famous male singer ,has long hair ,but he ______ short hair

Don’t give up halfway, Andy. You’ll succeed _______ if you keep on working like this.

I hear that _________ she is lovely she can beextremely difficult to deal with

he help of the collected money, subwayscan be built sooner and better, _______ brings convenience to citizens.