The first use of atomic weapons was in 1945, and their power __________ increased enormously eversince.
A.is |
B.was |
C.has been |
D.had been |
推荐套卷
The first use of atomic weapons was in 1945, and their power __________ increased enormously eversince.
A.is |
B.was |
C.has been |
D.had been |