They __________ studying when I called them. . . . A) was B) were C) are

__________ you mind closing the window? . . . . A) Could B) Would C) Should

She __________ him yesterday at the party. . . . A) see B) seen C) saw

Which sentence is correct? . . . . A) He didn’t knew the answer. B) He didn’t know the answer. C) He didn’t knows the answer.

I didn't ask her why. I'm sorry, I should have talked to her in the beginning to make sure she could really follow through with the process. She's in her 40s. She had a tutor last fall and then the tutor had to quit, so I contacted her and she said she'd like to meet with you online. As I recall she was a regular attender of our Saturday Conversation class and she was reliable to meet her tutor each time (except for when she went to China). Would you like to meet her? She said she'd be available to meet you this Saturday if you'd like. If you want to wait another week before starting, that's fine too. Thank you very much for your patience. Of course I would like to meet her. I have a meeting at 8:45am this Saturday. If we meet on this Saturday, please can I leave at 8:45?

Once, I thought that paper was the greatest invention throughout the whole history of human beings. It could be used to record the events and great thoughts in the history. We realized the ancient society by reading the words written on papers, but everything changed since the technology developed into a high level. Today, we are told not to use more papers in offices, because that only a finger nail size chip can store information as much as the amount of information all the books recorded in the past thousands years. It's very convenient! Additionally, a paperless society can protect our environment by cutting less trees. So, I think that chip maybe the greatest invention in the history. I don't know how excited the people were when they used papers for writting 2,000 years ago. Did they predict that paper can also be replaced by oithe things one day? So,will chips be replaced by other things in the furture? What will be hold in our hand? cell phones? What will be the next great invention? No matter, how the society develops, only two things have to be done during everyone's daily life, sleeping and eating. Bed and food are definitely the greatest invention in the history!

When we faced the extreme weather,we should calm down firstly.then we can seek for help via calling some others to help.If we can not seek for any help,we must depend on ourselves.According to the environment,we need to act the correct ways to save us,and you must confident and brave,having a calm brain to think.

The purchasing will give us the quotation

I've contacted a company which can repair the balances, but they said we need to deliver them to the company. I am trying to see other companies. I put balances in the spreadsheet, but I didn’t put quantity in it. If they can’t be repaired, do we need to order more? Only IA students need them.

I've contacted a company which can repair the balances, but they said we need to deliver them to the company.