We have a job _____ you _____ a waiter.[ ]

My brother is studying in ______ university in America; he wants to be ______ astronaut in the future.

About_______of the engineers in me company were born in the_________．

Do you have _______ email address? —Sorry, I only have a Wechat (微信) ID

Therestudents in our school at that time.