Plastic bottles can be recycled but they need cleaning thoroughly, _______ they?
#64598
A
needn't
B
don't
C
mustn't
D
can't
推荐题目
—Will people live to be 300 years old?—_________. 
#59753
A
No, they aren’t
B
No, they won’t
C
Yes, they were
D
Yes, they do
 ---- You have never seen an American film, have you? ---- ________. How I wish I had such a chance!
#65208
A
Yes, I have
B
Yes, I haven’t
C
No, I have
D
No, I haven’t
-Julia, _________will your son return?-In a week. 
#60040
A
how often
B
how far
C
how soon
D
how long