【正文】
w to work out it 4. — We need a new leader for our Helping Hands Club, but I don’t know ______. — Why not Mary? She is always willing to help others. A. what to choose B. how to choose C. when to choose D. who to choose5. The math problem is so hard. I really don’t know ______. A. how to do it B. how to do C. what to do it6. — Excuse me. Could you tell me ______ get to the nearest post office? — Sorry, I am new here. A. how can I B. how I could C. how to D. what I can 7. — Excuse me. Could you please tell me ______ my car? — Sure. Park it right here. I’ll help you. A. how to stop B. where to park C. where to stop D. when to park8. — ______ I swim here? — I’m sorry. Children ______ swim alone here. A. Must。 can’t B. May。 must C. Can。 mustn’t D. Can’t。 can 9. — Dad, must we wait until the light bees green? — Yes, I39。m afraid we ______. That39。s the traffic rule. A. can B. may C. have to D. need10. Students in our school ______ know shouting is not allowed in the library. A. can B. may C. must D. needRemember the grammar in this lesson.