When first __________ to the market, the computer software was not a success due to its complexity in operation. 
#96476
A
introducing
B
being introduced
C
introduced
D
to be introduced
推荐题目
My uncle has given up _________. He looks very healthy now.
#96316
A
smoke
B
smoked
C
to smoke
D
smoking
__________ there was danger ahead, the girl walked on.
#93989
A
Known not
B
Not known
C
Knowing not
D
Not knowing
 They were walking around the town       a place for the party. 
#90177
A
search for
B
to search for
C
searching
D
searched for
 We will do everything we can____ our city.
#97384
A
to save
B
save
C
saving
D
saved