请选择ABCD'l0T5],O1W+\7_:S'c,F Look at the sign “Keep quiet” on the wall. We ______ make a noise here.'?5T5Y4P8`1`'o;m/H/o1e+J*J4V
A. should'?5T5Y4P8`1`'o;m/H/o1e+J*J4V
B. must'?5T5Y4P8`1`'o;m/H/o1e+J*J4V
C. shouldn’t'?5T5Y4P8`1`'o;m/H/o1e+J*J4V
D. can'?5T5Y4P8`1`'o;m/H/o1e+J*J4V