UNICEF helps build a better world for everyone, _________ children all over the world.
probably
luckily
especially
closely
—Do you know when ____? I miss him very much. —Don’t worry. I will tell you as soon as ____.
—Would you like to stay ____ days in Beijing? —No, thanks. I’m afraid I’ll be back tomorrow.
—Mr. Wang, I have trouble ____ the text. —Remember ____ it three times at least.
One of my teachers ____ an Englishman.
It is not polite ____ in public places.