1. ______ garbage problems£¬the city will load huge spaceships with waste materials and send them towards the sun, ______ landfill and environmental problems.

A. To get rid of; to prevent                     B. Getting rid of; to prevent

C. To get rid of; preventing              D. Getting rid of; preventing

2. —When can I come for the computer? I need it this afternoon.

—It should be ready by noon. You can ______ us.

A. wait on                   B. take on                    C. rely on                    D. call on