I couldn’t do it ________ your great help. Thanks a lot!
| A．with | B．without | C．for | D．to |
Many people shop on line, ________ years ago, they bought things only from stores.
| A．and | B．so | C．but | D．or |
He lives on ________ floor in that building.
| A．three | B．third | C．the third | D．the three |
You are not supposed to get off the bus ________ it stops.
| A．though | B．while | C．until | D．because |
My teacher encouraged me ________ more confident.
| A．am | B．is | C．be | D．to be |
The taxis in this city ________ in the same color. You can see them every day.
| A．are | B．has | C．is | D．have |