[ Grammar ]
If you take fewer flights, you _______ your carbon footprint.
A. reduce
B. had reduced
C. will reduce
D. was reducing
Select your answer:
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Grammar › ViewI came here by train. The train was full and I _____ (stand) all the way.
A. must stand
B. had to stand
C. could stand
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Could you ___ this card for me?
a. male
b. mail