---As is reported, retirement age should be put off immediately.
--- Easier said than done.We take___________all factors into consideration, we shall be faced with some other social problems.
A. unless B. until C. if D. once
It is not easy to get along with him, but the friendship of his, will___________ last forever.
A. once gaining B. once gained C. while gaining D. to be gained
_________ their normal school hours,many of my students have additional evening or weekend classes.
A. Aside from B. In need of C. In case of D. Regardless of
In spite of the advanced medical technology, many Americans have no ________ to the good health care for poverty.
A. access B. entrance C. introduction D. devotion
What do you imagine ______ to Johnson?
A. happening B. having happening C. has happened D. to have happened
----Have you heard any sound last night ?
----Yes . At about 2 o'clock in the morning,a gun short ____________.
A. rang up B. rang off C. rang back D. rang out
