I don’t know who invented _____ iPhone, but I think it is____ useful invention．
#8139
A
the; a
B
the; the
C
an; the
D
an; a
推荐题目
I often have conversations with John over telephone, while keep in touch with Tom by__________ letter.
#10079
A
不填;;the
B
不填;a
C
the;不填
D
the; a
Robert is interested in ________ astronomy and he wishes he could make a trip into ________ space one day.
#7696
A
the; the
B
an; the
C
an; /
D
/; /
1. —Haven’t you heard the news?—What news?—Some of the workers are on march while others on strike.
#9496
A
the；the
B
the;/
C
/;the
D
/;/
It was _____ great shock to the world that two airplanes crashed into _____ World Trade Centre in New York on Sept．11．
#10087
A
a；／
B
the；the
C
a；the
D
／；the