1、名词性从句跟踪练习单项填空：1. Do you know why Mike is so late this morning?Sorry, I dont know _ be. A. can what the reasonB. what the reason canC. the reason what canD. what can the reason2. Lets go and ask the old scientist how old _. A. he isB. is heC. has heD. he has 3. _ beat Xiao Yong black and blue is not
2、known.A. WhomB. WhoeverC. Who D. What4. Why does Miss Li look unhappy today ? It is possible _ she misunderstood _ you said yesterday. A. that; that B. that; whatC. whether; what D. what; that 5. I drove to Guandong for the air show last year. Is that _ you had a few days off?A. whyB. whenC. whatD. where 6. Last night my father made a promise _ I passed the examination he would buy me a bicycle.A. thatB. if C. whetherD. that if（参考答案请见答案角）
