—What heavy rain it was!—Yes, but I love air after it rains. It smells so fresh. Fog and haze(雾霾)has become a big problem in China.
--The man in a black suit _______ be our youth worker.--- I’m sure it _______ be him. I saw him in the laboratory building some minutes ago.
Of the seven days in a week, Saturday is said to be the most popular _______ for a wedding in some countries.
Peter tried on three jackets, but _______ of them fitted him.
---Is Mr. Xi Jinping _______ honest and capable man?---Yes. And that is why he was chosen to be _______ president of our country.
Which of the following sentences is an opinion?