问题详情

What (11)this？ (12) a backpack． It"s my (13) What"s that？ It’s a (14) ．It is (15) computer．Is that a computer， too？ (16) ．It’s a TV set． It’s(17) TV set． I (18) it (19) Saturday evening． It is a (20) TV set．
()11．
A．is
B．are
C．am
D．be