It’s quite exciting________me________the Internet．
A．for，surf
B．for，to surf
C．for，for surf
Don’t get off the bus __________ it stops.
| A．after | B．until | C．when | D．since |
--How long ________ you _________ this book?
--For about one week. I ________ it from the library last Tuesday.
| A．have, kept, borrowed | B．have, borrowed, borrowed |
| C．do, keep, have borrowed | D．will, keep, have borrowed |
---Has he returned from Canada_________?
--- Yes, he’s _________ come back.
| A．yet; already | B．ever; already |
| C．already; yet | D．yet; yet |
--Where is Mr. Smith? ---He ___ Guangzhou. He ____ there for a week.
| A．has gone to; has been to | B．has gone to; has been |
| C．has been to; has gone to | D．has been in; has gone to |
My grandpa _____ in the city , but now he______ the life in the country.
| A．used to work, used to | B．used to do, is used to |
| C．used to work, is used to | D．is used to do, is used to |