15. We’d better stop at the gas station, ______ we’ll soon run out of gas.
(A) so
(B) but
(C) also
(D) or
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統計: A(110), B(68), C(69), D(1318), E(0) #1770215
統計: A(110), B(68), C(69), D(1318), E(0) #1770215