2 Put the words in the right order. [→ ®]
(1) Where will she be tomorrow? 一 I'm not sure, but ( at, be, she, may ) home.
(2) Meg sighs a lot these days. She ( a, have, must, problem ).
(3)( can't, true, the story, be )! It's unbelievable.
(4) Your dog is barking very loud. 一 (be, must, there, someone ) at the gate.
(5) Tom ( about, can't, this, know ) accident. It happened only ten minutes ago.
(6)(hear, our voices, may, someone) because the walls of this roonm are very thin.