John's success has nothing to do with good luck. It is years of hard work has made him what he is today.
A. why B. when C. which D. that
Listen! Do you hear someone for help?
A. calling B. call C. to call D. called
It rained heavily in the south，_______ serious flooding in several provinces.
A. caused B. having caused C. causing D. to cause
Mrs. White showed her students some old maps ______ from the library.
A. to borrow B. to be borrowed C. borrowed D. borrowing
Mark ______ have hurried. After driving at top speed, he arrived half an hour early.
A. needn’t B. wouldn’t C. mustn’t D. couldn’t
People have always been ______ about exactly how life on earth began.
A. curious B. excited C. anxious D. careful
