Though many extra planes and trains are used to carry passengers, traffic tools are still needed during “May Day” holidays[

How was the food in the restaurant— It was ________. I don’t want to go there again.

Some pre-school children go to a day care center, __________ they learn simple games and songs.

English is considered as a(n) _____ language, and it is no surprise that there are so many people in the world learning English.

I don’t know _______.Can you tell me________