Please don't call me at the office _______ it's really necessary.
A: if
B: unless
C: unless if
D: Except
A: if
B: unless
C: unless if
D: Except
举一反三
- Don’t call me unless it’s a real emergency. This is a __________ sentence.( ) A: compound B: compound-complex C: complex D: simple
- You can come with me to the museum this afternoon ______ you don't mind walking for half an hour. A: unless B: so far as C: except D: if
- Please note that phone number, ________ you want to call me and discuss things. A: in case B: unless C: until D: so that
- Well, I've got a head on my shoulders and a good pair of hands. Unless you don’t trust me, that's security, isn’t it?
- Don't leave the building ____ to do so. A: unless are instructed B: unless instructed C: unless being instructed D: unless to have been instructed