Only when he arrived home _____ that he had left his key in the office.
| A．will he realize | B．he did realize | C．did he realize | D．should he realize |
You will be late _____ you leave immediately.
| A．while | B．when | C．unless | D．as |
Father goes to the gym with us although he dislikes going there.
| A．hardly | B．seldom | C．sometimes | D．never |
at my classmates' faces, I read the same excitement in their eyes.
| A．Looking | B．Look | C．To look | D．Looked |
---Can I borrow your car this Sunday?
---______________. I won’t use it anyhow.
| A．Yes, indeed | B．Sure, go ahead. |
| C．Sorry, I don’t know. | D．Don’t mention it. |
In China car is becoming popular means of transportation.
| A．a; the | B．a; / | C．the ; a | D．the ; the |