The lady in the sitting room           be over sixty. She looks so young.

–When can I get the result of the test, sir?–You ____ have it next Friday.

Sometimes smiles around the world ________ be false, hiding other feelings like anger, fear or worry.

— It seems that Mr. Wu is standing there.— It ______ be him because he called me from Canada just now.

We'd better wait     more minutes. I think Jeff will come soon,