People in this area are in ______ over the heavily polluted air.
A: doubt
B: danger
C: trouble
D: suspense
A: doubt
B: danger
C: trouble
D: suspense
举一反三
- The air inside a house or office building often has higher concentrations of contaminants ____ heavily polluted outside air. A: than does B: more C: as some that are D: like of
- Generally speaking, air will be heavily polluted ______ there are factories. A: what B: which C: where
- The air in this area got A: to pollute B: pollute C: polluting D: polluted
- The polluted air in the city is badly ______ the health of the residents. A: danger B: endangering C: dangerous D: dangerously
- The air inside .a house on office building often has more contaminants（）the heavily polluted air outside. A: than does B: as C: as some that are D: than that of