two centimeters higher, ______ break the world record,” encouraged the coach.

I didn’t understand ________ so I raised my hand to ask.

The young scientist has made such great achievements in his chosen field ______ nobody else can make.

Excuse me. Is this the right way to No.1 Middle School?— Sorry, I am not sure. But it ______ be.[ ]

The problem ________ at the meeting yesterday.