We shouldn’t do that dangerous experiment ______the teacher is with as.
A: if not
B: if
C: unless
D: as long as
A: if not
B: if
C: unless
D: as long as
举一反三
- We have to do another experiment today, ____?: did we|don’t we|have we|shouldn’t we
- We have to do another experiment today, ____? A: have we B: don’t we C: did we D: shouldn’t we
- We had to wait a long time to get our passport,_____ A: don't we B: didn't we C: hadn't we D: shouldn't we
- We had to wait for a long time to get our visas, _____ A: didn’t we B: did we C: hadn’t we D: shouldn’t we
- ________we have enough evidence，we can’t win the case. A: once B: as long as C: unless D: since