问题
Sandy, I’m going to have ballet lessons. What do you think of it— You It’s no use trying to learn ballet ______ you have a gift for music.
A:until
B:unless
C:before
D:since;
B:unless
C:before
D:since;
正确答案是：
同类题型
What makes you decide to buy a new house in the town —This town is _______ pollution.
I ________ while reading the English textbookLuckily, my roommate woke me up in time!
When did you last see your first teacher—On a party last June her 40th year of teaching.
Some people plan to ______ a volunteer project to help the disabled children.
The book, ____ are true stories about great scientists of the 20th century, is well worth reading.