1. ______ Flying Luxury Hotel of Tomorrow is ______ huge 400-ton aircraft without wings.
A. /, a B. The, a C. The, the D. A, a
2. Robots will be very popular. ________, human beings will free themselves from the physical work.
A. Besides B. Regardless C. As a result D. Of course
3. –Where did you get these photos taken?
–It was in the countryside _______ my wife and I once worked.
A. that B. when C. where D. which
