问题

This is _____ “r” and that’s _____ “u”.
A:a, a
B:a, an
C:an, a
D:an, an;
B:a, an
C:an, a
D:an, an;
正确答案是:
同类题型
is body problem,DrDavid Ho , born in Taiwan, spent little time with his family.
Everyone ______ English hard in our class.
Thank you for all your hard work last week. I don’t think we _____ it without you.
sor Smith, along with his assistants,________ on the project day and night to meet the deadline