loadingA、 seeing B、 saw C、 see D、 seen
参考答案： C 49(2分)、 2
Do you know ______at the bus stop? A、
whom they are waiting for B、
who they are waiting C、
whom are they waiting for D、
who are they waiting 参考答案： A 50(2分)、 2
This is the first draft of the book. Please feel perfectly free to ____ on it. A、 cope B、 complain C、 comment D、 VVV
参考答案： C