单选题 —I think everyone should play a part in saving our environment. —I agree.For example，there will be less air pollution ________ we drive less.

单选题 She tried to phone him, ________ there was no answer because he was abroad.

单选题 My parents want me to get further study to be ________ an engineer ________ a scientist, ________ I would like to be a famous surgeon doctor.

单选题 Betty was silent at first, ________ soon she joined the girls, talking and laughing.

单选题 I called Jim last night, ________ he didn’t answer the phone.

单选题 It is not easy to change habits, ________ with hard work and self-control, you can make it.

单选题 Try again, ________ you will make it. Mike failed many times, ________ he never gave up.

单选题 The shops were closed ________ I couldn’t buy anything.

单选题 — Anna, you wear a new dress today！ — It fits me well, ________ the colour is not my favourite.