Which one is the correct etiquette ? A: Keep the mobile phone in power. B: Mute or turn off the mobile phone before the interview. C: If somebody calls you during the interview, you have to pick up the phone. D: You can play with your mobile phone in the interview.

Will you keep my place in the queue for me ______ I go and make a phone call A: since B: while C: in case D: until

What can you do to keep abreast with latest information of photography industry?

Miss Liu told me _____ she would keep practicing yoga in her daily life. A: that B: to C: not to

Rewrite the following senetences after the model, using inversion structure. Model: If he should be interested, I would phone him. --Should he be interested, I would phone him. If I had knwon, I would have written before. --Had I known, I would have written before. 1. If you should change your mind, no one would blame you. 2. If you had not helped me, I would have failed. 3. If it were not for e-mail, it would be difficult for us to keep in touch.