–It’s eight o’clock. We are late _______ the school.to B. at C. in D for
The number of the wild animals is getting smaller and smaller _______people’s activities.
The sentence structure of “The boy is crying.” is__________
________ time went by, we became best friends.
Look, it is ____________so _______________.
Many birds fly away because plants die and insects hide_____ coldness_______ winter.