________Bob take part in designing the energy saving houses?— All right.It’s said that he has rich experience of this. [ ]

This meeting room is a non-smoking area. I would like to warn you___________ that if you smoked here you would be fined.

Xi’an is really a fascinating city andwe’ve decided to stay for two weeks.

He as well as his classmates______ physics.

—Learning a language isn’t easy Ittakes time—I agree ________ There is no shortcut