问题
The volunteers are doing _____ difficult and important work; they share _____ common goal — to help people in need.
A:a; a
B:a; the
C:不填; the
D:不填; a;
B:a; the
C:不填; the
D:不填; a;
正确答案是：
同类题型
Can you explain ________ the sun goes down in thewest
How long do you suppose ______ we applied for the job ________ we had been trained .
I Englishsince I was five years old.
xt morning she found the man___________ in bed, dead.
I’m _______Chinese and I do feel______Chinese language is ____most beautiful language