—Peter, do you know if David _________us in the fashion show this Sunday?—I’m sure if he _________his homework, he will join us.
-----How are you doing? -----_____________
In order_______ late, many students get up very early every morning.
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.