Are you going there with us?— If Mary wants to go, __________.

35．—Eric, can you help me choose a computer? —No problem.________do you wish to use it for?

________ thank you too much for all your help to my son while we were away from home.

ere is less and less coal and oil,scientists are exploring new ways of making use of ______ energy, such assunlight, wind and water for power and fuel

Professor Smith, some students want to have a talk with you. ___ they wait here or outside?— Show them in now, please.