A:Cu+2AgNO3=2Ag+Cu(NO3)2
B:CO+CuO═Cu+CO2
C:NaOH+HCl=NaCl+H2O
D:CaO+H2O=Ca(OH)2
He asked me _________.
Don't ____ ____ ____ the window.
Tom is looking forward to ____ (lie) on the beach to enjoy the sunshine.
29×2=____
46×2=____
12×8=____