It is said that the software on learning subjects for pupils in a very practical way.
A.designed | B.designing | C.are designed | D.is designed |
The first use of atomic weapons was in 1945.And their power _______ increased enormously ever since.
A.is | B.was |
C.has been | D.had been |
—Bad luck! I the sidewalk when an Audi cut in and knocked me down.
—You can never be too careful!
A.crossed | B.have crossed |
C.was crossing | D.had been crossing |
In Turkey, sometimes babies _______ for the time of their birth.
A.are named | B.name |
C.have been named | D.named |
—Have you started writing your report?
—Not yet.I _______ a hard time getting the information.
A.am having | B.had |
C.was having | D.will have |
—Have you received a reply to your job application?
—No.I ______.
A.waited | B.am waiting |
C.have waited | D.had been waiting |
Since the new speed limits ______,the number of accidents in the area has fallen strikingly.
A.were introduced |
B.introduced |
C.have been introduced |
D.have introduced |
I ________ in Nanjing for many years, but I’ve never regretted my final decision to move back to Huai’an.
A.worked | B.was working | C.have worked | D.had worked |
According to Charles Keeling, the amount of carbon dioxide ________ sharply and steadily over the forty years between 1957 and 1997.
A.increased | B.had increased |
C.had been increased | D.was increasing |
The film was really wonderful! I _____ such a good film for ages before that night!
A.haven’t seen | B.didn’t see |
C.hadn’t seen | D.wasn’t seeing |
The captain as well as his team interviewed shortly after they won the gold medal.
A.are | B.was | C.is | D.were |
Hi, Jack. Nice to see you here. I _____ you would come to the party.
A.don’t know | B.didn’t know |
C.haven’t known | D.hadn’t known |
— Have you moved to your new house?
— Not yet. My house ______.
A.has been painted | B.is painted |
C.is painting | D.is being painted |
He was unhappy when he sold his guitar.After all, he ________ it for a very long time.
A.has had | B.had had |
C.has | D.had |