Some people get in touch with each other by mobile phones__________ others keep contact with each other by e-mail.
A. while B. before C .when C. since
I regarded her to be nice and honest _______ I met her.
| A．first time | B．for the first time | C．the first time | D．by the first time |
Only by practising a few hours every day _______ be able to master the language.
| A．you can | B．can you | C．you will | D．will you |
The soldiers planned to _____ the bridge but had to give up because a storm ____.
| A．blow up, blew away | B．blow down, blew up |
| C．blow up, blew up | D．blow down, blew away |
The film Twilight, _______ leading characters are Bella and Edward, is a great hit.
| A．who | B．whose | C．which | D．when |
Living in the central Australia desert has a lot of problems, _______ getting water is the worst.
| A．for which | B．to which | C．of which | D．in which |