You will never guess ________.
| A．who am I waiting for | B．what has happened |
| C．how can she help me | D．where did I go |
— Will you go to Sandy’s birthday party? — I won’t go unless Tony______．
| A．was invited | B．has invited | C．is invited | D．will be invited |
—_____will you stay here? —Until tomorrow afternoon．
| A．How long | B．How soon | C．When | D．How often |
My shoes are worn out．They need_______．
| A．to repair | B．be repaired | C．repaired | D．Repairing |
He hadn’t worked hard at his lessons．_______, he failed in the exam．
| A．As a result | B．However | C．Otherwise | D．Since then |
— When did the meeting begin?
—At four o’clock．It ______ for 15 minutes．
| A．was on | B．began | C．has been on | D．has begun |