______ we know the facts, we can’t do anything about it.
A: As long as
B: When
C: Once
D: Until
A: As long as
B: When
C: Once
D: Until
举一反三
- ________we have enough evidence，we can’t win the case. A: once B: as long as C: unless D: since
- Lord Kelvin once said “When you can measure what you are speaking about, and express it in _______, you know something about it.”
- We didn’t know what to do _______ the money had gone. A: once B: whether C: though D: then
- We didn’t have supper ______ our father came home. A: when B: once C: as soon as D: until
- I don't know ______ we can finish the work on time. A: that B: if C: when