With the development of high technology, more and more new things ______ in the past years.
#100055
A
discovered
B
have discovered
C
had been discovered
D
have been discovered
推荐题目
I found the lecture hard to follow because it _______ when I arrived.
#99091
A
started
B
was starting
C
would start
D
had started
Although the peak travel time for Chinese railway doesn't start until Jan 19 this year, people who're eager to get a seat on the train _______ already _______ their struggles.
#100687
A
are; starting
B
has; started
C
have; started
D
are; started
When I talked with my grandma on the phone, she sounded weak, but by the time we ____ up, he voice had been full of life．
#104124
A
were hanging
B
had hung
C
hung
D
would hang
－What are you busy with ? －The conference _______ in our city next week.
#103391
A
held
B
will be held
C
be holding
D
to be held
Tom was disappointed that most of the guests _________ when he _________ at the party.
#101896
A
left; arrived
B
had left; arrived
C
left; had arrived
D
had left; had arrived