The old man feels very _________because all his children have gone abroad and his wife _________ for almost two years.
These are _______books. Yours are over there .
We have had several visits ______the famous nature zoo.
She’ll come back in _______ hour ,
- I'm going on a trip to Singapore after the exam. - Really? _______!
- When did your parents _______? - They _______ for 20 years.