He improved his English a lot ______ listening to the radio.
A. with B. by C. for D. on
The students hurried to the classroom ________ the bell rang.
A. until B. as soon as
C. if D. so that
We were angry ________ him for keeping us waiting.
A. with B. at C. for D. on
Tony is ________ to go to school.
A. enough old B. old enough
C. enough young D. young enough
Sam worked until midnight yesterday. So he feels ______ today.
A. sleep B. asleep
C. sleepy D. sleeping
He failed the exam ________ he was too careless.
A. because B. but
C. so that D. so
