问题

rove the quality of our products, weask ____ has used them for suggestions
A:/; a
B:the;/
C:the; a
D:/;/
B:the;/
C:the; a
D:/;/
正确答案是:
同类题型
Only when _______ according to the directions strictly will the medicine work well[ ]
2.— Why were you absent yesterday? — I caught a cold, _______I had been walking around in the rain
She is new here, so she has _______ friends at school.
Have you thought of a situation ______ this idiom can be used