Is Tina _______ to her sister?–Yes, they both have big eyes and round face.

I’m looking for the watch ______ I left on the table just now. [ ]

The research project has only been______for three months, so it’s too early to comment on its success.

Who’s the man over there?Is it Mr. Black?——It______be him. He’s much taller.

The two men walked _____ the forest and got to a small house.[ ]