Please ________ in the classroom．
| A．don’t run |
| B．doesn’t run |
| C．not run |
| D．can’t run |
Which of the following signs means “No photos”？
A． |
B． |
C． |
D． |
—Don’t play near the classroom，please．
—________．
| A．Yes，I do |
| B．Sorry，I won’t |
| C．No，I don’t |
| D．Not at all |
—Can they swim in the lake？
—________．
| A．Yes，they do |
| B．No，they don’t |
| C．Yes，they can |
| D．No，they didn’t |
They arrived ________ Shanghai ________ a cold morning．
| A．in；in |
| B．in；on |
| C．at；on |
| D．at；in |