---Has Mr. Smith ________ heard about the story?
---No， he hasn’t .
| A．yet | B．just | C．ever | D．once |
That isruler.
| A．a her | B．she | C．her | D．hers |
are his brothers.
| A．That | B．It | C．These | D．This |
Thanksyour help.
| A．at | B．for | C．of | D．to |
We’re going for a picnic tomorrow. I _______ whether Jack can come.
| A．know | B．guess | C．believe | D．wonder |
The students were singing an English song _______ Mr. Xiang came into the classroom.
| A．after | B．when | C．before | D．as |