三、复合句，句套句，动词时态要呼应，习惯用法须记清。 例7．She didn't tell us_______________.
A.how old the patient was B.how old was the patient
C.how old the patient is D.how old is the patient
例8.-When will you tell him the good news?
-I will tell him about it as soon as he______________back.
A.comes B.came C.will come D.is coming
例9.Do you know if_____________back next week? If he_________back,please let me know.
A.he comes, will come B.will he come, come
C.he will come, comes D.will he come, will come
例10.Our physics teacher told us light_____________faster than sound.
A.travelled B.has travelled C.travels D.will travel
