______ I’m concerned about most is ______ we can collect a huge amount of money in such a short time after the war.
A. Why; because B. What; how
C. That; that D. What; if
How long do you guess it will be ________ we graduate from senior high school?
A. when B. before C. until D. since
Check your answers carefully and make some changes ______.
A. if you are convenient B. if not
C. if it necessary D. if necessary
— I feel tired out.
— Why don’t you bring ______ to his attention that you are too tired to go on working?
A. one B. that C. it D. this
______ those unforgettable days in Yimeng mountain areas, the old general couldn’t hold back his tears.
A. Looking back at B. Look back at
C. Being looking back at D. Looked back at
Jack is late again. It is ______ of him to keep others waiting.
A. punctual B. considerate C. dynamic D. typical