My English-Chinese dictionary isn’t in my schoolbag. Where _________ I have put it?

(2014·南通第二次学情调研)—In case anyone ________come in my absence，tell him I will be back soon.—Sure，I will.

--- Are you in a hurry? --- No, in fact, I’ve got plenty of time. I _______ wait.

— I am going to spend my holiday in the countryside. — ________. The air there is fresh and the views are attractive as well.

Sometimes smiles ______ be false, hiding other feelings like anger, fear or worry.