问题:
The teacher won’t begin the class ______ all the students ______.
A.until ; stop to talk
B.until; stop talking
C.if; stop to talk
D.if ; stop talking
The teacher won’t begin the class ______ all the students ______.
A.until ; stop to talk | B.until; stop talking |
C.if; stop to talk | D.if ; stop talking |
参考答案: