He is sure to come_______ he has some urgent work to do at home.
A: unless
B: if
C: though
D: since
A: unless
B: if
C: though
D: since
举一反三
- She is sure to come unless she has some urgent business.
- Anyone can borrow books from the library _______he has a library card A: As long as B: Even though C: since D: Unless
- Anyone can borrow books from the library he has a library card. A: since B: so long as C: even though D: unless
- Something _______ has come up. He has to attend a very urgent meeting.
- ______ he is a hard-working person, he has not been successful in business. A: Since B: Although C: Unless D: However